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okal/vega-schema.json

Created January 18, 2016 12:53
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Vega Schema
Raw
vega-schema.json
{
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Vega Visualization Specification Language",
"defs": {
"axis": {
"type": "object",
"properties": {
"type": {
"enum": [
"x",
"y"
]
},
"scale": {
"type": "string"
},
"orient": {
"enum": [
"top",
"bottom",
"left",
"right"
]
},
"title": {
"type": "string"
},
"titleOffset": {
"type": "number"
},
"format": {
"type": "string"
},
"formatType": {
"enum": [
"time",
"utc",
"string",
"number"
]
},
"ticks": {
"type": "number"
},
"values": {
"type": "array",
"items": {
"type": [
"string",
"number"
]
}
},
"subdivide": {
"type": "number"
},
"tickPadding": {
"type": "number"
},
"tickSize": {
"type": "number"
},
"tickSizeMajor": {
"type": "number"
},
"tickSizeMinor": {
"type": "number"
},
"tickSizeEnd": {
"type": "number"
},
"offset": {
"oneOf": [
{
"type": "number"
},
{
"type": "object",
"properties": {
"scale": {
"type": "string"
},
"value": {
"type": [
"string",
"number"
]
}
},
"required": [
"scale",
"value"
],
"additionalProperties": false
}
]
},
"layer": {
"enum": [
"front",
"back"
],
"default": "front"
},
"grid": {
"type": "boolean"
},
"properties": {
"type": "object",
"properties": {
"ticks": {
"$ref": "#/defs/propset"
},
"majorTicks": {
"$ref": "#/defs/propset"
},
"minorTicks": {
"$ref": "#/defs/propset"
},
"labels": {
"$ref": "#/defs/propset"
},
"title": {
"$ref": "#/defs/propset"
},
"grid": {
"$ref": "#/defs/propset"
},
"axis": {
"$ref": "#/defs/propset"
}
},
"additionalProperties": false
}
},
"additionalProperties": false,
"required": [
"type",
"scale"
]
},
"background": {
"type": "string"
},
"data": {
"title": "Input data set definition",
"type": "object",
"allOf": [
{
"properties": {
"name": {
"type": "string"
},
"transform": {
"$ref": "#/defs/transform"
},
"modify": {
"$ref": "#/defs/modify"
},
"format": {
"type": "object",
"oneOf": [
{
"properties": {
"type": {
"enum": [
"json"
]
},
"parse": {
"oneOf": [
{
"enum": [
"auto"
]
},
{
"type": "object",
"additionalProperties": {
"enum": [
"number",
"boolean",
"date",
"string"
]
}
}
]
},
"property": {
"type": "string"
}
},
"additionalProperties": false
},
{
"properties": {
"type": {
"enum": [
"csv",
"tsv"
]
},
"parse": {
"oneOf": [
{
"enum": [
"auto"
]
},
{
"type": "object",
"additionalProperties": {
"enum": [
"number",
"boolean",
"date",
"string"
]
}
}
]
}
},
"additionalProperties": false
},
{
"oneOf": [
{
"properties": {
"type": {
"enum": [
"topojson"
]
},
"feature": {
"type": "string"
}
},
"additionalProperties": false
},
{
"properties": {
"type": {
"enum": [
"topojson"
]
},
"mesh": {
"type": "string"
}
},
"additionalProperties": false
}
]
},
{
"properties": {
"type": {
"enum": [
"treejson"
]
},
"children": {
"type": "string"
},
"parse": {
"oneOf": [
{
"enum": [
"auto"
]
},
{
"type": "object",
"additionalProperties": {
"enum": [
"number",
"boolean",
"date",
"string"
]
}
}
]
}
},
"additionalProperties": false
}
]
}
},
"required": [
"name"
]
},
{
"anyOf": [
{
"required": [
"name",
"modify"
]
},
{
"oneOf": [
{
"properties": {
"source": {
"type": "string"
}
},
"required": [
"source"
]
},
{
"properties": {
"values": {
"type": "array"
}
},
"required": [
"values"
]
},
{
"properties": {
"url": {
"type": "string"
}
},
"required": [
"url"
]
}
]
}
]
}
]
},
"legend": {
"type": "object",
"properties": {
"size": {
"type": "string"
},
"shape": {
"type": "string"
},
"fill": {
"type": "string"
},
"stroke": {
"type": "string"
},
"orient": {
"enum": [
"left",
"right"
],
"default": "right"
},
"offset": {
"type": "number"
},
"title": {
"type": "string"
},
"values": {
"type": "array"
},
"format": {
"type": "string"
},
"properties": {
"type": "object",
"properties": {
"title": {
"$ref": "#/defs/propset"
},
"labels": {
"$ref": "#/defs/propset"
},
"legend": {
"$ref": "#/defs/propset"
},
"symbols": {
"$ref": "#/defs/propset"
},
"gradient": {
"$ref": "#/defs/propset"
}
},
"additionalProperties": false
}
},
"additionalProperties": false,
"anyOf": [
{
"required": [
"size"
]
},
{
"required": [
"shape"
]
},
{
"required": [
"fill"
]
},
{
"required": [
"stroke"
]
}
]
},
"mark": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"key": {
"type": "string"
},
"type": {
"enum": [
"rect",
"symbol",
"path",
"arc",
"area",
"line",
"rule",
"image",
"text",
"group"
]
},
"from": {
"type": "object",
"properties": {
"data": {
"type": "string"
},
"mark": {
"type": "string"
},
"transform": {
"$ref": "#/defs/transform"
}
},
"additionalProperties": false
},
"delay": {
"$ref": "#/refs/numberValue"
},
"ease": {
"enum": [
"linear-in",
"linear-out",
"linear-in-out",
"linear-out-in",
"quad-in",
"quad-out",
"quad-in-out",
"quad-out-in",
"cubic-in",
"cubic-out",
"cubic-in-out",
"cubic-out-in",
"sin-in",
"sin-out",
"sin-in-out",
"sin-out-in",
"exp-in",
"exp-out",
"exp-in-out",
"exp-out-in",
"circle-in",
"circle-out",
"circle-in-out",
"circle-out-in",
"bounce-in",
"bounce-out",
"bounce-in-out",
"bounce-out-in"
]
},
"interactive": {
"type": "boolean"
},
"properties": {
"type": "object",
"properties": {
"enter": {
"$ref": "#/defs/propset"
},
"update": {
"$ref": "#/defs/propset"
},
"exit": {
"$ref": "#/defs/propset"
},
"hover": {
"$ref": "#/defs/propset"
}
},
"additionalProperties": false,
"anyOf": [
{
"required": [
"enter"
]
},
{
"required": [
"update"
]
}
]
}
},
"anyOf": [
{
"required": [
"type"
]
},
{
"required": [
"name"
]
}
]
},
"container": {
"type": "object",
"properties": {
"scene": {
"type": "object",
"properties": {
"fill": {
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
},
"fillOpacity": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"stroke": {
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
},
"strokeOpacity": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"strokeWidth": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"strokeDash": {
"oneOf": [
{
"type": "array",
"items": {
"type": "number"
}
},
{
"$ref": "#/refs/signal"
}
]
},
"strokeDashOffset": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
}
}
},
"scales": {
"type": "array",
"items": {
"$ref": "#/defs/scale"
}
},
"axes": {
"type": "array",
"items": {
"$ref": "#/defs/axis"
}
},
"legends": {
"type": "array",
"items": {
"$ref": "#/defs/legend"
}
},
"marks": {
"type": "array",
"items": {
"oneOf": [
{
"$ref": "#/defs/groupMark"
},
{
"$ref": "#/defs/visualMark"
}
]
}
}
}
},
"groupMark": {
"allOf": [
{
"properties": {
"type": {
"enum": [
"group"
]
}
},
"required": [
"type"
]
},
{
"$ref": "#/defs/mark"
},
{
"$ref": "#/defs/container"
}
]
},
"visualMark": {
"allOf": [
{
"not": {
"properties": {
"type": {
"enum": [
"group"
]
}
}
}
},
{
"$ref": "#/defs/mark"
}
]
},
"modify": {
"type": "array",
"items": {
"type": "object",
"oneOf": [
{
"properties": {
"type": {
"enum": [
"insert",
"remove",
"toggle"
]
},
"signal": {
"type": "string"
},
"field": {
"type": "string"
}
},
"required": [
"type",
"signal",
"field"
]
},
{
"properties": {
"type": {
"enum": [
"clear"
]
},
"predicate": {
"type": "string"
}
},
"required": [
"type",
"predicate"
]
}
]
}
},
"padding": {
"oneOf": [
{
"enum": [
"strict",
"auto"
]
},
{
"type": "number"
},
{
"type": "object",
"properties": {
"top": {
"type": "number"
},
"bottom": {
"type": "number"
},
"left": {
"type": "number"
},
"right": {
"type": "number"
}
},
"additionalProperties": false
}
]
},
"predicate": {
"type": "object",
"oneOf": [
{
"properties": {
"name": {
"type": "string"
},
"type": {
"enum": [
"==",
"!=",
">",
"<",
">=",
"<="
]
},
"operands": {
"type": "array",
"items": {
"$ref": "#/refs/operand"
},
"minItems": 2,
"maxItems": 2
}
},
"required": [
"name",
"type",
"operands"
]
},
{
"properties": {
"name": {
"type": "string"
},
"type": {
"enum": [
"and",
"&&",
"or",
"||"
]
},
"operands": {
"type": "array",
"items": {
"$ref": "#/refs/operand"
},
"minItems": 2
}
},
"required": [
"name",
"type",
"operands"
]
},
{
"properties": {
"name": {
"type": "string"
},
"type": {
"enum": [
"in"
]
},
"item": {
"$ref": "#/refs/operand"
}
},
"oneOf": [
{
"properties": {
"range": {
"type": "array",
"items": {
"$ref": "#/refs/operand"
},
"minItems": 2
},
"scale": {
"$ref": "#/refs/scopedScale"
}
},
"required": [
"range"
]
},
{
"properties": {
"data": {
"type": "string"
},
"field": {
"type": "string"
}
},
"required": [
"data",
"field"
]
}
],
"required": [
"name",
"type",
"item"
]
}
]
},
"propset": {
"title": "Mark property set",
"type": "object",
"properties": {
"x": {
"$ref": "#/refs/numberValue"
},
"x2": {
"$ref": "#/refs/numberValue"
},
"xc": {
"$ref": "#/refs/numberValue"
},
"width": {
"$ref": "#/refs/numberValue"
},
"y": {
"$ref": "#/refs/numberValue"
},
"y2": {
"$ref": "#/refs/numberValue"
},
"yc": {
"$ref": "#/refs/numberValue"
},
"height": {
"$ref": "#/refs/numberValue"
},
"opacity": {
"$ref": "#/refs/numberValue"
},
"fill": {
"$ref": "#/refs/colorValue"
},
"fillOpacity": {
"$ref": "#/refs/numberValue"
},
"stroke": {
"$ref": "#/refs/colorValue"
},
"strokeWidth": {
"$ref": "#/refs/numberValue"
},
"strokeOpacity": {
"$ref": "#/refs/numberValue"
},
"strokeDash": {
"$ref": "#/refs/arrayValue"
},
"strokeDashOffset": {
"$ref": "#/refs/numberValue"
},
"clip": {
"$ref": "#/refs/booleanValue"
},
"size": {
"$ref": "#/refs/numberValue"
},
"shape": {
"oneOf": [
{
"type": "object",
"properties": {
"rule": {
"type": "array",
"items": {
"allOf": [
{
"type": "object",
"properties": {
"predicate": {
"oneOf": [
{
"type": "string"
},
{
"type": "object",
"properties": {
"name": {
"type": "string"
}
},
"required": [
"name"
]
}
]
}
}
},
{
"type": "object",
"allOf": [
{
"$ref": "#/refs/stringModifiers"
},
{
"oneOf": [
{
"$ref": "#/refs/signal",
"required": [
"signal"
]
},
{
"properties": {
"value": {
"enum": [
"circle",
"square",
"cross",
"diamond",
"triangle-up",
"triangle-down"
]
}
},
"required": [
"value"
]
},
{
"properties": {
"field": {
"$ref": "#/refs/field"
}
},
"required": [
"field"
]
},
{
"properties": {
"band": {
"type": "boolean"
}
},
"required": [
"band"
]
}
]
}
]
}
]
}
}
},
"additionalProperties": false,
"required": [
"rule"
]
},
{
"type": "array",
"items": {
"allOf": [
{
"type": "object",
"properties": {
"predicate": {
"oneOf": [
{
"type": "string"
},
{
"type": "object",
"properties": {
"name": {
"type": "string"
}
},
"required": [
"name"
]
}
]
}
}
},
{
"type": "object",
"allOf": [
{
"$ref": "#/refs/stringModifiers"
},
{
"oneOf": [
{
"$ref": "#/refs/signal",
"required": [
"signal"
]
},
{
"properties": {
"value": {
"enum": [
"circle",
"square",
"cross",
"diamond",
"triangle-up",
"triangle-down"
]
}
},
"required": [
"value"
]
},
{
"properties": {
"field": {
"$ref": "#/refs/field"
}
},
"required": [
"field"
]
},
{
"properties": {
"band": {
"type": "boolean"
}
},
"required": [
"band"
]
}
]
}
]
}
]
}
},
{
"type": "object",
"allOf": [
{
"$ref": "#/refs/stringModifiers"
},
{
"oneOf": [
{
"$ref": "#/refs/signal",
"required": [
"signal"
]
},
{
"properties": {
"value": {
"enum": [
"circle",
"square",
"cross",
"diamond",
"triangle-up",
"triangle-down"
]
}
},
"required": [
"value"
]
},
{
"properties": {
"field": {
"$ref": "#/refs/field"
}
},
"required": [
"field"
]
},
{
"properties": {
"band": {
"type": "boolean"
}
},
"required": [
"band"
]
}
]
}
]
}
]
},
"path": {
"$ref": "#/refs/stringValue"
},
"innerRadius": {
"$ref": "#/refs/numberValue"
},
"outerRadius": {
"$ref": "#/refs/numberValue"
},
"startAngle": {
"$ref": "#/refs/numberValue"
},
"endAngle": {
"$ref": "#/refs/numberValue"
},
"interpolate": {
"oneOf": [
{
"type": "object",
"properties": {
"rule": {
"type": "array",
"items": {
"allOf": [
{
"type": "object",
"properties": {
"predicate": {
"oneOf": [
{
"type": "string"
},
{
"type": "object",
"properties": {
"name": {
"type": "string"
}
},
"required": [
"name"
]
}
]
}
}
},
{
"type": "object",
"allOf": [
{
"$ref": "#/refs/stringModifiers"
},
{
"oneOf": [
{
"$ref": "#/refs/signal",
"required": [
"signal"
]
},
{
"properties": {
"value": {
"enum": [
"linear",
"step-before",
"step-after",
"basis",
"basis-open",
"cardinal",
"cardinal-open",
"monotone"
]
}
},
"required": [
"value"
]
},
{
"properties": {
"field": {
"$ref": "#/refs/field"
}
},
"required": [
"field"
]
},
{
"properties": {
"band": {
"type": "boolean"
}
},
"required": [
"band"
]
}
]
}
]
}
]
}
}
},
"additionalProperties": false,
"required": [
"rule"
]
},
{
"type": "array",
"items": {
"allOf": [
{
"type": "object",
"properties": {
"predicate": {
"oneOf": [
{
"type": "string"
},
{
"type": "object",
"properties": {
"name": {
"type": "string"
}
},
"required": [
"name"
]
}
]
}
}
},
{
"type": "object",
"allOf": [
{
"$ref": "#/refs/stringModifiers"
},
{
"oneOf": [
{
"$ref": "#/refs/signal",
"required": [
"signal"
]
},
{
"properties": {
"value": {
"enum": [
"linear",
"step-before",
"step-after",
"basis",
"basis-open",
"cardinal",
"cardinal-open",
"monotone"
]
}
},
"required": [
"value"
]
},
{
"properties": {
"field": {
"$ref": "#/refs/field"
}
},
"required": [
"field"
]
},
{
"properties": {
"band": {
"type": "boolean"
}
},
"required": [
"band"
]
}
]
}
]
}
]
}
},
{
"type": "object",
"allOf": [
{
"$ref": "#/refs/stringModifiers"
},
{
"oneOf": [
{
"$ref": "#/refs/signal",
"required": [
"signal"
]
},
{
"properties": {
"value": {
"enum": [
"linear",
"step-before",
"step-after",
"basis",
"basis-open",
"cardinal",
"cardinal-open",
"monotone"
]
}
},
"required": [
"value"
]
},
{
"properties": {
"field": {
"$ref": "#/refs/field"
}
},
"required": [
"field"
]
},
{
"properties": {
"band": {
"type": "boolean"
}
},
"required": [
"band"
]
}
]
}
]
}
]
},
"tension": {
"$ref": "#/refs/numberValue"
},
"url": {
"$ref": "#/refs/stringValue"
},
"align": {
"oneOf": [
{
"type": "object",
"properties": {
"rule": {
"type": "array",
"items": {
"allOf": [
{
"type": "object",
"properties": {
"predicate": {
"oneOf": [
{
"type": "string"
},
{
"type": "object",
"properties": {
"name": {
"type": "string"
}
},
"required": [
"name"
]
}
]
}
}
},
{
"type": "object",
"allOf": [
{
"$ref": "#/refs/stringModifiers"
},
{
"oneOf": [
{
"$ref": "#/refs/signal",
"required": [
"signal"
]
},
{
"properties": {
"value": {
"enum": [
"left",
"right",
"center"
]
}
},
"required": [
"value"
]
},
{
"properties": {
"field": {
"$ref": "#/refs/field"
}
},
"required": [
"field"
]
},
{
"properties": {
"band": {
"type": "boolean"
}
},
"required": [
"band"
]
}
]
}
]
}
]
}
}
},
"additionalProperties": false,
"required": [
"rule"
]
},
{
"type": "array",
"items": {
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{
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"properties": {
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{
"type": "string"
},
{
"type": "object",
"properties": {
"name": {
"type": "string"
}
},
"required": [
"name"
]
}
]
}
}
},
{
"type": "object",
"allOf": [
{
"$ref": "#/refs/stringModifiers"
},
{
"oneOf": [
{
"$ref": "#/refs/signal",
"required": [
"signal"
]
},
{
"properties": {
"value": {
"enum": [
"left",
"right",
"center"
]
}
},
"required": [
"value"
]
},
{
"properties": {
"field": {
"$ref": "#/refs/field"
}
},
"required": [
"field"
]
},
{
"properties": {
"band": {
"type": "boolean"
}
},
"required": [
"band"
]
}
]
}
]
}
]
}
},
{
"type": "object",
"allOf": [
{
"$ref": "#/refs/stringModifiers"
},
{
"oneOf": [
{
"$ref": "#/refs/signal",
"required": [
"signal"
]
},
{
"properties": {
"value": {
"enum": [
"left",
"right",
"center"
]
}
},
"required": [
"value"
]
},
{
"properties": {
"field": {
"$ref": "#/refs/field"
}
},
"required": [
"field"
]
},
{
"properties": {
"band": {
"type": "boolean"
}
},
"required": [
"band"
]
}
]
}
]
}
]
},
"baseline": {
"oneOf": [
{
"type": "object",
"properties": {
"rule": {
"type": "array",
"items": {
"allOf": [
{
"type": "object",
"properties": {
"predicate": {
"oneOf": [
{
"type": "string"
},
{
"type": "object",
"properties": {
"name": {
"type": "string"
}
},
"required": [
"name"
]
}
]
}
}
},
{
"type": "object",
"allOf": [
{
"$ref": "#/refs/stringModifiers"
},
{
"oneOf": [
{
"$ref": "#/refs/signal",
"required": [
"signal"
]
},
{
"properties": {
"value": {
"enum": [
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"middle",
"bottom",
"alphabetic"
]
}
},
"required": [
"value"
]
},
{
"properties": {
"field": {
"$ref": "#/refs/field"
}
},
"required": [
"field"
]
},
{
"properties": {
"band": {
"type": "boolean"
}
},
"required": [
"band"
]
}
]
}
]
}
]
}
}
},
"additionalProperties": false,
"required": [
"rule"
]
},
{
"type": "array",
"items": {
"allOf": [
{
"type": "object",
"properties": {
"predicate": {
"oneOf": [
{
"type": "string"
},
{
"type": "object",
"properties": {
"name": {
"type": "string"
}
},
"required": [
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]
}
]
}
}
},
{
"type": "object",
"allOf": [
{
"$ref": "#/refs/stringModifiers"
},
{
"oneOf": [
{
"$ref": "#/refs/signal",
"required": [
"signal"
]
},
{
"properties": {
"value": {
"enum": [
"top",
"middle",
"bottom",
"alphabetic"
]
}
},
"required": [
"value"
]
},
{
"properties": {
"field": {
"$ref": "#/refs/field"
}
},
"required": [
"field"
]
},
{
"properties": {
"band": {
"type": "boolean"
}
},
"required": [
"band"
]
}
]
}
]
}
]
}
},
{
"type": "object",
"allOf": [
{
"$ref": "#/refs/stringModifiers"
},
{
"oneOf": [
{
"$ref": "#/refs/signal",
"required": [
"signal"
]
},
{
"properties": {
"value": {
"enum": [
"top",
"middle",
"bottom",
"alphabetic"
]
}
},
"required": [
"value"
]
},
{
"properties": {
"field": {
"$ref": "#/refs/field"
}
},
"required": [
"field"
]
},
{
"properties": {
"band": {
"type": "boolean"
}
},
"required": [
"band"
]
}
]
}
]
}
]
},
"text": {
"$ref": "#/refs/stringValue"
},
"dx": {
"$ref": "#/refs/numberValue"
},
"dy": {
"$ref": "#/refs/numberValue"
},
"radius": {
"$ref": "#/refs/numberValue"
},
"theta": {
"$ref": "#/refs/numberValue"
},
"angle": {
"$ref": "#/refs/numberValue"
},
"font": {
"$ref": "#/refs/stringValue"
},
"fontSize": {
"$ref": "#/refs/numberValue"
},
"fontWeight": {
"$ref": "#/refs/stringValue"
},
"fontStyle": {
"$ref": "#/refs/stringValue"
}
},
"additionalProperties": false
},
"signal": {
"type": "object",
"properties": {
"name": {
"type": "string",
"not": {
"enum": [
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"event",
"signals",
"width",
"height",
"padding",
"isNaN",
"isFinite",
"abs",
"acos",
"asin",
"atan",
"atan2",
"ceil",
"cos",
"exp",
"floor",
"log",
"max",
"min",
"pow",
"random",
"round",
"sin",
"sqrt",
"tan",
"clamp",
"now",
"utc",
"datetime",
"date",
"day",
"year",
"month",
"hours",
"minutes",
"seconds",
"milliseconds",
"time",
"timezoneoffset",
"utcdate",
"utcday",
"utcyear",
"utcmonth",
"utchours",
"utcminutes",
"utcseconds",
"utcmilliseconds",
"length",
"indexof",
"lastindexof",
"parseFloat",
"parseInt",
"upper",
"lower",
"slice",
"substring",
"replace",
"regexp",
"test",
"if",
"eventItem",
"eventGroup",
"eventX",
"eventY",
"open",
"scale",
"iscale",
"inrange",
"format",
"timeFormat",
"utcFormat"
]
}
},
"init": {},
"verbose": {
"type": "boolean",
"default": false
},
"expr": {
"type": "string"
},
"scale": {
"$ref": "#/refs/scopedScale"
},
"streams": {
"$ref": "#/defs/streams"
}
},
"additionalProperties": false,
"required": [
"name"
]
},
"spec": {
"title": "Vega visualization specification",
"type": "object",
"allOf": [
{
"$ref": "#/defs/container"
},
{
"properties": {
"width": {
"type": "number"
},
"height": {
"type": "number"
},
"viewport": {
"type": "array",
"items": {
"type": "number"
},
"maxItems": 2
},
"background": {
"$ref": "#/defs/background"
},
"padding": {
"$ref": "#/defs/padding"
},
"signals": {
"type": "array",
"items": {
"$ref": "#/defs/signal"
}
},
"predicates": {
"type": "array",
"items": {
"$ref": "#/defs/predicate"
}
},
"data": {
"type": "array",
"items": {
"$ref": "#/defs/data"
}
}
}
}
]
},
"streams": {
"type": "array",
"items": {
"type": "object",
"properties": {
"type": {
"type": "string"
},
"expr": {
"type": "string"
},
"scale": {
"$ref": "#/refs/scopedScale"
}
},
"additionalProperties": false,
"required": [
"type",
"expr"
]
}
},
"aggregateTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Aggregate transform",
"description": "Compute summary aggregate statistics",
"type": "object",
"properties": {
"type": {
"enum": [
"aggregate"
]
},
"groupby": {
"type": "array",
"items": {
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
},
"description": "A list of fields to split the data into groups."
},
"summarize": {
"oneOf": [
{
"type": "object",
"additionalProperties": {
"type": "array",
"description": "An array of aggregate functions.",
"items": {
"oneOf": [
{
"enum": [
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"count",
"valid",
"missing",
"distinct",
"sum",
"mean",
"average",
"variance",
"variancep",
"stdev",
"stdevp",
"median",
"q1",
"q3",
"modeskew",
"min",
"max",
"argmin",
"argmax"
]
},
{
"$ref": "#/refs/signal"
}
]
}
}
},
{
"type": "array",
"items": {
"type": "object",
"properties": {
"field": {
"description": "The name of the field to aggregate.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
},
"ops": {
"type": "array",
"description": "An array of aggregate functions.",
"items": {
"oneOf": [
{
"enum": [
"values",
"count",
"valid",
"missing",
"distinct",
"sum",
"mean",
"average",
"variance",
"variancep",
"stdev",
"stdevp",
"median",
"q1",
"q3",
"modeskew",
"min",
"max",
"argmin",
"argmax"
]
},
{
"$ref": "#/refs/signal"
}
]
}
},
"as": {
"type": "array",
"description": "An optional array of names to use for the output fields.",
"items": {
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
}
}
},
"additionalProperties": false,
"required": [
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"ops"
]
}
}
]
}
},
"additionalProperties": false,
"required": [
"type"
]
},
"binTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Bin transform",
"description": "Bins values into quantitative bins (e.g., for a histogram).",
"type": "object",
"properties": {
"type": {
"enum": [
"bin"
]
},
"field": {
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
],
"description": "The name of the field to bin values from."
},
"min": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
],
"description": "The minimum bin value to consider."
},
"max": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
],
"description": "The maximum bin value to consider."
},
"base": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
],
"description": "The number base to use for automatic bin determination.",
"default": 10
},
"maxbins": {
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{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
],
"description": "The maximum number of allowable bins.",
"default": 20
},
"step": {
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{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
],
"description": "An exact step size to use between bins. If provided, options such as maxbins will be ignored."
},
"steps": {
"description": "An array of allowable step sizes to choose from.",
"oneOf": [
{
"type": "array",
"items": {
"type": "number"
}
},
{
"$ref": "#/refs/signal"
}
]
},
"minstep": {
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{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
],
"description": "A minimum allowable step size (particularly useful for integer values)."
},
"div": {
"description": "An array of scale factors indicating allowable subdivisions.",
"oneOf": [
{
"type": "array",
"items": {
"type": "number"
},
"default": [
5,
2
]
},
{
"$ref": "#/refs/signal"
}
]
},
"output": {
"type": "object",
"description": "Rename the output data fields",
"properties": {
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"type": "string",
"default": "bin_start"
},
"end": {
"type": "string",
"default": "bin_end"
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"mid": {
"type": "string",
"default": "bin_mid"
}
},
"additionalProperties": false
}
},
"additionalProperties": false,
"required": [
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"field"
]
},
"crossTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Cross transform",
"description": "Compute the cross-product of two data sets.",
"type": "object",
"properties": {
"type": {
"enum": [
"cross"
]
},
"with": {
"type": "string",
"description": "The name of the secondary data set to cross with the primary data. If unspecified, the primary data is crossed with itself."
},
"diagonal": {
"oneOf": [
{
"type": "boolean"
},
{
"$ref": "#/refs/signal"
}
],
"description": "If false, items along the \"diagonal\" of the cross-product (those elements with the same index in their respective array) will not be included in the output.",
"default": true
},
"filter": {
"type": "string",
"description": "A string containing an expression (in JavaScript syntax) to filter the resulting data elements."
},
"output": {
"type": "object",
"description": "Rename the output data fields",
"properties": {
"left": {
"type": "string",
"default": "a"
},
"right": {
"type": "string",
"default": "b"
}
},
"additionalProperties": false
}
},
"additionalProperties": false,
"required": [
"type"
]
},
"countpatternTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "CountPattern transform",
"type": "object",
"properties": {
"type": {
"enum": [
"countpattern"
]
},
"field": {
"description": "The field containing the text to analyze.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
],
"default": "data"
},
"pattern": {
"description": "A regexp pattern for matching words in text.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
],
"default": "[\\w']+"
},
"case": {
"description": "Text case transformation to apply.",
"oneOf": [
{
"enum": [
"lower",
"upper",
"none"
]
},
{
"$ref": "#/refs/signal"
}
],
"default": "lower"
},
"stopwords": {
"description": "A regexp pattern for matching stopwords to omit.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
],
"default": ""
},
"output": {
"type": "object",
"description": "Rename the output data fields",
"properties": {
"text": {
"type": "string",
"default": "text"
},
"count": {
"type": "string",
"default": "count"
}
},
"additionalProperties": false
}
},
"additionalProperties": false,
"required": [
"type"
]
},
"linkpathTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "LinkPath transform",
"description": "Computes a path definition for connecting nodes within a node-link network or tree diagram.",
"type": "object",
"properties": {
"type": {
"enum": [
"linkpath"
]
},
"sourceX": {
"description": "The data field that references the source x-coordinate for this link.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
],
"default": "_source"
},
"sourceY": {
"description": "The data field that references the source y-coordinate for this link.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
],
"default": "_source"
},
"targetX": {
"description": "The data field that references the target x-coordinate for this link.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
],
"default": "_target"
},
"targetY": {
"description": "The data field that references the target y-coordinate for this link.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
],
"default": "_target"
},
"tension": {
"description": "A tension parameter for the \"tightness\" of \"curve\"-shaped links.",
"oneOf": [
{
"type": "number",
"minimum": 0,
"maximum": 1
},
{
"$ref": "#/refs/signal"
}
],
"default": 0.2
},
"shape": {
"description": "The path shape to use",
"oneOf": [
{
"enum": [
"line",
"curve",
"cornerX",
"cornerY",
"cornerR",
"diagonalX",
"diagonalY",
"diagonalR"
]
},
{
"$ref": "#/refs/signal"
}
],
"default": "line"
},
"output": {
"type": "object",
"description": "Rename the output data fields",
"properties": {
"path": {
"type": "string",
"default": "layout_path"
}
},
"additionalProperties": false
}
},
"additionalProperties": false,
"required": [
"type"
]
},
"facetTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Facet transform",
"description": "A special aggregate transform that organizes a data set into groups or \"facets\".",
"type": "object",
"properties": {
"type": {
"enum": [
"facet"
]
},
"groupby": {
"type": "array",
"items": {
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
},
"description": "A list of fields to split the data into groups."
},
"summarize": {
"oneOf": [
{
"type": "object",
"additionalProperties": {
"type": "array",
"description": "An array of aggregate functions.",
"items": {
"oneOf": [
{
"enum": [
"values",
"count",
"valid",
"missing",
"distinct",
"sum",
"mean",
"average",
"variance",
"variancep",
"stdev",
"stdevp",
"median",
"q1",
"q3",
"modeskew",
"min",
"max",
"argmin",
"argmax"
]
},
{
"$ref": "#/refs/signal"
}
]
}
}
},
{
"type": "array",
"items": {
"type": "object",
"properties": {
"field": {
"description": "The name of the field to aggregate.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
},
"ops": {
"type": "array",
"description": "An array of aggregate functions.",
"items": {
"oneOf": [
{
"enum": [
"values",
"count",
"valid",
"missing",
"distinct",
"sum",
"mean",
"average",
"variance",
"variancep",
"stdev",
"stdevp",
"median",
"q1",
"q3",
"modeskew",
"min",
"max",
"argmin",
"argmax"
]
},
{
"$ref": "#/refs/signal"
}
]
}
},
"as": {
"type": "array",
"description": "An optional array of names to use for the output fields.",
"items": {
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
}
}
},
"additionalProperties": false,
"required": [
"field",
"ops"
]
}
}
]
},
"transform": {
"$ref": "#/defs/transform"
}
},
"additionalProperties": false,
"required": [
"type"
]
},
"filterTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Filter transform",
"description": "Filters elements from a data set to remove unwanted items.",
"type": "object",
"properties": {
"type": {
"enum": [
"filter"
]
},
"test": {
"type": "string",
"description": "A string containing an expression (in JavaScript syntax) for the filter predicate."
}
},
"additionalProperties": false,
"required": [
"type",
"test"
]
},
"foldTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Fold transform",
"description": "Collapse (\"fold\") one or more data properties into two properties.",
"type": "object",
"properties": {
"type": {
"enum": [
"fold"
]
},
"fields": {
"oneOf": [
{
"type": "array",
"description": "An array of field references indicating the data properties to fold.",
"items": {
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
},
"minItems": 1,
"uniqueItems": true
},
{
"$ref": "#/refs/signal"
}
]
},
"output": {
"type": "object",
"description": "Rename the output data fields",
"properties": {
"key": {
"type": "string",
"default": "key"
},
"value": {
"type": "string",
"default": "value"
}
},
"additionalProperties": false
}
},
"additionalProperties": false,
"required": [
"type",
"fields"
]
},
"forceTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Force transform",
"description": "Performs force-directed layout for network data.",
"type": "object",
"properties": {
"type": {
"enum": [
"force"
]
},
"size": {
"description": "The dimensions [width, height] of this force layout.",
"oneOf": [
{
"type": "array",
"minItems": 2,
"maxItems": 2,
"items": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
}
},
{
"$ref": "#/refs/signal"
}
],
"default": [
500,
500
]
},
"links": {
"type": "string",
"description": "The name of the link (edge) data set."
},
"linkDistance": {
"description": "Determines the length of edges, in pixels.",
"oneOf": [
{
"type": "number"
},
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
],
"default": 20
},
"linkStrength": {
"oneOf": [
{
"type": "number"
},
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
],
"description": "Determines the tension of edges (the spring constant).",
"default": 1
},
"charge": {
"oneOf": [
{
"type": "number"
},
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
],
"description": "The strength of the charge each node exerts.",
"default": -30
},
"chargeDistance": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
],
"description": "The maximum distance over which charge forces are applied.",
"default": null
},
"iterations": {
"description": "The number of iterations to run the force directed layout.",
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
],
"default": 500
},
"friction": {
"description": "The strength of the friction force used to stabilize the layout.",
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
],
"default": 0.9
},
"theta": {
"description": "The theta parameter for the Barnes-Hut algorithm, which is used to compute charge forces between nodes.",
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
],
"default": 0.8
},
"gravity": {
"description": "The strength of the pseudo-gravity force that pulls nodes towards the center of the layout area.",
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
],
"default": 0.1
},
"alpha": {
"description": "A \"temperature\" parameter that determines how much node positions are adjusted at each step.",
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
],
"default": 0.1
},
"output": {
"type": "object",
"description": "Rename the output data fields",
"properties": {
"x": {
"type": "string",
"default": "layout_x"
},
"y": {
"type": "string",
"default": "layout_y"
}
},
"additionalProperties": false
}
},
"additionalProperties": false,
"required": [
"type",
"links"
]
},
"formulaTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Formula transform",
"description": "Extends data elements with new values according to a calculation formula.",
"type": "object",
"properties": {
"type": {
"enum": [
"formula"
]
},
"field": {
"type": "string",
"description": "The property name in which to store the computed formula value."
},
"expr": {
"type": "string",
"description": "A string containing an expression (in JavaScript syntax) for the formula."
}
},
"required": [
"type",
"field",
"expr"
]
},
"geoTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Geo transform",
"description": "Performs a cartographic projection. Given longitude and latitude values, sets corresponding x and y properties for a mark.",
"type": "object",
"properties": {
"type": {
"enum": [
"geo"
]
},
"lon": {
"description": "The input longitude values.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
},
"lat": {
"description": "The input latitude values.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
},
"output": {
"type": "object",
"description": "Rename the output data fields",
"properties": {
"x": {
"type": "string",
"default": "layout_x"
},
"y": {
"type": "string",
"default": "layout_y"
}
},
"additionalProperties": false
},
"projection": {
"description": "The type of cartographic projection to use.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
],
"default": "mercator"
},
"center": {
"description": "The center of the projection.",
"oneOf": [
{
"type": "array",
"items": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"minItems": 2,
"maxItems": 2
},
{
"$ref": "#/refs/signal"
}
]
},
"translate": {
"description": "The translation of the projection.",
"oneOf": [
{
"type": "array",
"items": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"minItems": 2,
"maxItems": 2
},
{
"$ref": "#/refs/signal"
}
]
},
"rotate": {
"description": "The rotation of the projection.",
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"scale": {
"description": "The scale of the projection.",
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"precision": {
"description": "The desired precision of the projection.",
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"clipAngle": {
"description": "The clip angle of the projection.",
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"clipExtent": {
"description": "The clip extent of the projection.",
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
}
},
"required": [
"type",
"lon",
"lat"
],
"additionalProperties": false
},
"geopathTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "GeoPath transform",
"description": "Creates paths for geographic regions, such as countries, states and counties.",
"type": "object",
"properties": {
"type": {
"enum": [
"geopath"
]
},
"field": {
"description": "The data field containing GeoJSON Feature data.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
},
"output": {
"type": "object",
"description": "Rename the output data fields",
"properties": {
"path": {
"type": "string",
"default": "layout_path"
}
},
"additionalProperties": false
},
"projection": {
"description": "The type of cartographic projection to use.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
],
"default": "mercator"
},
"center": {
"description": "The center of the projection.",
"oneOf": [
{
"type": "array",
"items": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"minItems": 2,
"maxItems": 2
},
{
"$ref": "#/refs/signal"
}
]
},
"translate": {
"description": "The translation of the projection.",
"oneOf": [
{
"type": "array",
"items": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"minItems": 2,
"maxItems": 2
},
{
"$ref": "#/refs/signal"
}
]
},
"rotate": {
"description": "The rotation of the projection.",
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"scale": {
"description": "The scale of the projection.",
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"precision": {
"description": "The desired precision of the projection.",
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"clipAngle": {
"description": "The clip angle of the projection.",
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"clipExtent": {
"description": "The clip extent of the projection.",
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
}
},
"required": [
"type"
],
"additionalProperties": false
},
"hierarchyTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Hierarchy transform",
"type": "object",
"properties": {
"type": {
"enum": [
"hierarchy"
]
},
"sort": {
"description": "A list of fields to use as sort criteria for sibling nodes.",
"oneOf": [
{
"type": "array",
"items": {
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
}
},
{
"$ref": "#/refs/signal"
}
]
},
"children": {
"description": "The data field for the children node array",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
],
"default": "children"
},
"parent": {
"description": "The data field for the parent node",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
],
"default": "parent"
},
"field": {
"description": "The value for the area of each leaf-level node for partition layouts.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
},
"mode": {
"description": "The layout algorithm mode to use.",
"oneOf": [
{
"enum": [
"tidy",
"cluster",
"partition"
]
},
{
"$ref": "#/refs/signal"
}
],
"default": "tidy"
},
"orient": {
"description": "The layout orientation to use.",
"oneOf": [
{
"enum": [
"cartesian",
"radial"
]
},
{
"$ref": "#/refs/signal"
}
],
"default": "cartesian"
},
"size": {
"description": "The dimensions of the tree layout",
"oneOf": [
{
"type": "array",
"items": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"minItems": 2,
"maxItems": 2
},
{
"$ref": "#/refs/signal"
}
],
"default": [
500,
500
]
},
"nodesize": {
"description": "Sets a fixed x,y size for each node (overrides the size parameter)",
"oneOf": [
{
"type": "array",
"items": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"minItems": 2,
"maxItems": 2
},
{
"$ref": "#/refs/signal"
}
],
"default": null
},
"output": {
"type": "object",
"description": "Rename the output data fields",
"properties": {
"x": {
"type": "string",
"default": "layout_x"
},
"y": {
"type": "string",
"default": "layout_y"
},
"width": {
"type": "string",
"default": "layout_width"
},
"height": {
"type": "string",
"default": "layout_height"
},
"depth": {
"type": "string",
"default": "layout_depth"
}
},
"additionalProperties": false
}
},
"additionalProperties": false,
"required": [
"type"
]
},
"imputeTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Impute transform",
"description": "Performs imputation of missing values.",
"type": "object",
"properties": {
"type": {
"enum": [
"impute"
]
},
"method": {
"description": "The imputation method to use.",
"oneOf": [
{
"enum": [
"value",
"mean",
"median",
"min",
"max"
]
},
{
"$ref": "#/refs/signal"
}
],
"default": "value"
},
"value": {
"description": "The value to use for missing data if the method is 'value'.",
"oneOf": [
{
"type": "number"
},
{
"type": "string"
},
{
"type": "boolean"
},
{
"type": "null"
},
{
"$ref": "#/refs/signal"
}
],
"default": 0
},
"field": {
"description": "The data field to impute.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
},
"groupby": {
"description": "A list of fields to group the data into series.",
"oneOf": [
{
"type": "array",
"items": {
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
}
},
{
"$ref": "#/refs/signal"
}
]
},
"orderby": {
"description": "A list of fields to determine ordering within series.",
"oneOf": [
{
"type": "array",
"items": {
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
}
},
{
"$ref": "#/refs/signal"
}
]
}
},
"additionalProperties": false,
"required": [
"type",
"groupby",
"orderby",
"field"
]
},
"lookupTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Lookup transform",
"description": "Extends a data set by looking up values in another data set.",
"type": "object",
"properties": {
"type": {
"enum": [
"lookup"
]
},
"on": {
"type": "string",
"description": "The name of the secondary data set on which to lookup values."
},
"onKey": {
"description": "The key field to lookup, or null for index-based lookup.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
},
"keys": {
"description": "One or more fields in the primary data set to match against the secondary data set.",
"type": "array",
"items": {
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
}
},
"as": {
"type": "array",
"description": "The names of the fields in which to store looked-up values.",
"items": {
"type": "string"
}
},
"default": {
"description": "The default value to use if a lookup match fails."
}
},
"required": [
"type",
"on",
"as",
"keys"
],
"additionalProperties": false
},
"pieTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Pie transform",
"description": "Computes a pie chart layout.",
"type": "object",
"properties": {
"type": {
"enum": [
"pie"
]
},
"field": {
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
],
"description": "The data values to encode as angular spans. If this property is omitted, all pie slices will have equal spans."
},
"startAngle": {
"oneOf": [
{
"type": "number",
"minimum": 0,
"maximum": 6.283185307179586
},
{
"$ref": "#/refs/signal"
}
],
"default": 0
},
"endAngle": {
"oneOf": [
{
"type": "number",
"minimum": 0,
"maximum": 6.283185307179586
},
{
"$ref": "#/refs/signal"
}
],
"default": 6.283185307179586
},
"sort": {
"description": " If true, will sort the data prior to computing angles.",
"oneOf": [
{
"type": "boolean"
},
{
"$ref": "#/refs/signal"
}
],
"default": false
},
"output": {
"type": "object",
"description": "Rename the output data fields",
"properties": {
"start": {
"type": "string",
"default": "layout_start"
},
"end": {
"type": "string",
"default": "layout_end"
},
"mid": {
"type": "string",
"default": "layout_mid"
}
}
}
},
"required": [
"type"
]
},
"rankTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Rank transform",
"description": "Computes ascending rank scores for data tuples.",
"type": "object",
"properties": {
"type": {
"enum": [
"rank"
]
},
"field": {
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
],
"description": "A key field to used to rank tuples. If undefined, tuples will be ranked in their observed order."
},
"normalize": {
"description": "If true, values of the output field will lie in the range [0, 1].",
"oneOf": [
{
"type": "boolean"
},
{
"$ref": "#/refs/signal"
}
],
"default": false
},
"output": {
"type": "object",
"description": "Rename the output data fields",
"properties": {
"rank": {
"type": "string",
"default": "rank"
}
},
"additionalProperties": false
}
},
"additionalProperties": false,
"required": [
"type"
]
},
"sortTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Sort transform",
"description": "Sorts the values of a data set.",
"type": "object",
"properties": {
"type": {
"enum": [
"sort"
]
},
"by": {
"oneOf": [
{
"type": "string"
},
{
"type": "array",
"items": {
"type": "string"
}
}
],
"description": "A list of fields to use as sort criteria."
}
},
"required": [
"type",
"by"
]
},
"stackTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Stack transform",
"description": "Computes layout values for stacked graphs, as in stacked bar charts or stream graphs.",
"type": "object",
"properties": {
"type": {
"enum": [
"stack"
]
},
"groupby": {
"description": "A list of fields to split the data into groups (stacks).",
"oneOf": [
{
"type": "array",
"items": {
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
}
},
{
"$ref": "#/refs/signal"
}
]
},
"sortby": {
"description": "A list of fields to determine the sort order of stacks.",
"oneOf": [
{
"type": "array",
"items": {
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
}
},
{
"$ref": "#/refs/signal"
}
]
},
"field": {
"description": "The data field that determines the thickness/height of stacks.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
},
"offset": {
"description": "The baseline offset",
"oneOf": [
{
"enum": [
"zero",
"center",
"normalize"
]
},
{
"$ref": "#/refs/signal"
}
],
"default": "zero"
},
"output": {
"type": "object",
"description": "Rename the output data fields",
"properties": {
"start": {
"type": "string",
"default": "layout_start"
},
"end": {
"type": "string",
"default": "layout_end"
},
"mid": {
"type": "string",
"default": "layout_mid"
}
},
"additionalProperties": false
}
},
"additionalProperties": false,
"required": [
"type",
"groupby",
"field"
]
},
"treeifyTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Treeify transform",
"type": "object",
"properties": {
"type": {
"enum": [
"treeify"
]
},
"groupby": {
"description": "An ordered list of fields by which to group tuples into a tree.",
"oneOf": [
{
"type": "array",
"items": {
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
}
},
{
"$ref": "#/refs/signal"
}
]
},
"output": {
"type": "object",
"description": "Rename the output data fields",
"properties": {
"children": {
"type": "string",
"default": "children"
},
"parent": {
"type": "string",
"default": "parent"
}
},
"additionalProperties": false
}
},
"additionalProperties": false,
"required": [
"type",
"groupby"
]
},
"treemapTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Treemap transform",
"type": "object",
"properties": {
"type": {
"enum": [
"treemap"
]
},
"sort": {
"description": "A list of fields to use as sort criteria for sibling nodes.",
"oneOf": [
{
"type": "array",
"items": {
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
}
},
{
"$ref": "#/refs/signal"
}
],
"default": [
"-value"
]
},
"children": {
"description": "The data field for the children node array",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
],
"default": "children"
},
"parent": {
"description": "The data field for the parent node",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
],
"default": "parent"
},
"field": {
"description": "The values to use to determine the area of each leaf-level treemap cell.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
},
"mode": {
"description": "The treemap layout algorithm to use.",
"oneOf": [
{
"enum": [
"squarify",
"slice",
"dice",
"slice-dice"
]
},
{
"$ref": "#/refs/signal"
}
],
"default": "squarify"
},
"size": {
"description": "The dimensions of the treemap layout",
"oneOf": [
{
"type": "array",
"items": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"minItems": 2,
"maxItems": 2
},
{
"$ref": "#/refs/signal"
}
],
"default": [
500,
500
]
},
"round": {
"description": "If true, treemap cell dimensions will be rounded to integer pixels.",
"oneOf": [
{
"type": "boolean"
},
{
"$ref": "#/refs/signal"
}
],
"default": true
},
"sticky": {
"description": "If true, repeated runs of the treemap will use cached partition boundaries.",
"oneOf": [
{
"type": "boolean"
},
{
"$ref": "#/refs/signal"
}
],
"default": false
},
"ratio": {
"description": "The target aspect ratio for the layout to optimize.",
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
],
"default": 1.618033988749895
},
"padding": {
"oneOf": [
{
"type": "number"
},
{
"type": "array",
"items": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"minItems": 4,
"maxItems": 4
},
{
"$ref": "#/refs/signal"
}
],
"description": "he padding (in pixels) to provide around internal nodes in the treemap."
},
"output": {
"type": "object",
"description": "Rename the output data fields",
"properties": {
"x": {
"type": "string",
"default": "layout_x"
},
"y": {
"type": "string",
"default": "layout_y"
},
"width": {
"type": "string",
"default": "layout_width"
},
"height": {
"type": "string",
"default": "layout_height"
},
"depth": {
"type": "string",
"default": "layout_depth"
}
},
"additionalProperties": false
}
},
"additionalProperties": false,
"required": [
"type"
]
},
"voronoiTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Voronoi transform",
"type": "object",
"properties": {
"type": {
"enum": [
"voronoi"
]
},
"clipExtent": {
"description": "The min and max points at which to clip the voronoi diagram.",
"oneOf": [
{
"type": "array",
"items": {
"oneOf": [
{
"type": "array",
"items": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"minItems": 2,
"maxItems": 2
},
{
"$ref": "#/refs/signal"
}
]
},
"minItems": 2,
"maxItems": 2
},
{
"$ref": "#/refs/signal"
}
],
"default": [
[
-100000,
-100000
],
[
100000,
100000
]
]
},
"x": {
"description": "The input x coordinates.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
},
"y": {
"description": "The input y coordinates.",
"oneOf": [
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
]
},
"output": {
"type": "object",
"description": "Rename the output data fields",
"properties": {
"path": {
"type": "string",
"default": "layout_path"
}
},
"additionalProperties": false
}
},
"additionalProperties": false,
"required": [
"type"
]
},
"wordcloudTransform": {
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "Wordcloud transform",
"type": "object",
"properties": {
"type": {
"enum": [
"wordcloud"
]
},
"size": {
"description": "The dimensions of the wordcloud layout",
"oneOf": [
{
"type": "array",
"items": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"minItems": 2,
"maxItems": 2
},
{
"$ref": "#/refs/signal"
}
],
"default": [
900,
500
]
},
"font": {
"description": "The font face to use for a word.",
"oneOf": [
{
"type": "string"
},
{
"type": "object",
"oneOf": [
{
"properties": {
"field": {
"type": "string"
}
},
"required": [
"field"
]
},
{
"properties": {
"value": {
"type": "string"
}
},
"required": [
"value"
]
}
]
},
{
"$ref": "#/refs/signal"
}
],
"default": "sans-serif"
},
"fontStyle": {
"description": "The font style to use for a word.",
"oneOf": [
{
"type": "string"
},
{
"type": "object",
"oneOf": [
{
"properties": {
"field": {
"type": "string"
}
},
"required": [
"field"
]
},
{
"properties": {
"value": {
"type": "string"
}
},
"required": [
"value"
]
}
]
},
{
"$ref": "#/refs/signal"
}
],
"default": "normal"
},
"fontWeight": {
"description": "The font weight to use for a word.",
"oneOf": [
{
"type": "string"
},
{
"type": "object",
"oneOf": [
{
"properties": {
"field": {
"type": "string"
}
},
"required": [
"field"
]
},
{
"properties": {
"value": {
"type": "string"
}
},
"required": [
"value"
]
}
]
},
{
"$ref": "#/refs/signal"
}
],
"default": "normal"
},
"fontSize": {
"description": "The font size to use for a word.",
"oneOf": [
{
"type": "number"
},
{
"type": "object",
"oneOf": [
{
"properties": {
"field": {
"type": "string"
}
},
"required": [
"field"
]
},
{
"properties": {
"value": {
"type": "string"
}
},
"required": [
"value"
]
}
]
},
{
"type": "string"
},
{
"$ref": "#/refs/signal"
}
],
"default": 14
},
"fontScale": {
"description": "The minimum and maximum scaled font sizes, or null to prevent scaling.",
"oneOf": [
{
"type": "null"
},
{
"type": "array",
"minItems": 2,
"maxItems": 2,
"items": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
}
}
],
"default": [
10,
50
]
},
"rotate": {
"description": "The field or number to set the roration angle (in degrees).",
"oneOf": [
{
"type": "number"
},
{
"type": "string"
},
{
"type": "object",
"oneOf": [
{
"properties": {
"field": {
"type": "string"
}
},
"required": [
"field"
]
},
{
"properties": {
"value": {
"type": "string"
}
},
"required": [
"value"
]
}
]
},
{
"$ref": "#/refs/signal"
}
],
"default": 0
},
"text": {
"description": "The field containing the text to use for each word.",
"oneOf": [
{
"type": "string"
},
{
"type": "object",
"oneOf": [
{
"properties": {
"field": {
"type": "string"
}
},
"required": [
"field"
]
},
{
"properties": {
"value": {
"type": "string"
}
},
"required": [
"value"
]
}
]
},
{
"$ref": "#/refs/signal"
}
],
"default": "data"
},
"spiral": {
"description": "The type of spiral used for positioning words, either 'archimedean' or 'rectangular'.",
"oneOf": [
{
"enum": [
"archimedean",
"rectangular"
]
},
{
"type": "object",
"oneOf": [
{
"properties": {
"field": {
"type": "string"
}
},
"required": [
"field"
]
},
{
"properties": {
"value": {
"type": "string"
}
},
"required": [
"value"
]
}
]
},
{
"$ref": "#/refs/signal"
}
],
"default": "archimedean"
},
"padding": {
"description": "The padding around each word.",
"oneOf": [
{
"type": "number"
},
{
"type": "object",
"oneOf": [
{
"properties": {
"field": {
"type": "string"
}
},
"required": [
"field"
]
},
{
"properties": {
"value": {
"type": "string"
}
},
"required": [
"value"
]
}
]
},
{
"$ref": "#/refs/signal"
}
],
"default": 1
},
"output": {
"type": "object",
"description": "Rename the output data fields",
"properties": {
"x": {
"type": "string",
"default": "layout_x"
},
"y": {
"type": "string",
"default": "layout_y"
},
"font": {
"type": "string",
"default": "layout_font"
},
"fontSize": {
"type": "string",
"default": "layout_fontSize"
},
"fontStyle": {
"type": "string",
"default": "layout_fontStyle"
},
"fontWeight": {
"type": "string",
"default": "layout_fontWeight"
},
"rotate": {
"type": "string",
"default": "layout_rotate"
}
},
"additionalProperties": false
}
},
"additionalProperties": false,
"required": [
"type"
]
},
"transform": {
"type": "array",
"items": {
"oneOf": [
{
"$ref": "#/defs/aggregateTransform"
},
{
"$ref": "#/defs/binTransform"
},
{
"$ref": "#/defs/crossTransform"
},
{
"$ref": "#/defs/countpatternTransform"
},
{
"$ref": "#/defs/linkpathTransform"
},
{
"$ref": "#/defs/facetTransform"
},
{
"$ref": "#/defs/filterTransform"
},
{
"$ref": "#/defs/foldTransform"
},
{
"$ref": "#/defs/forceTransform"
},
{
"$ref": "#/defs/formulaTransform"
},
{
"$ref": "#/defs/geoTransform"
},
{
"$ref": "#/defs/geopathTransform"
},
{
"$ref": "#/defs/hierarchyTransform"
},
{
"$ref": "#/defs/imputeTransform"
},
{
"$ref": "#/defs/lookupTransform"
},
{
"$ref": "#/defs/pieTransform"
},
{
"$ref": "#/defs/rankTransform"
},
{
"$ref": "#/defs/sortTransform"
},
{
"$ref": "#/defs/stackTransform"
},
{
"$ref": "#/defs/treeifyTransform"
},
{
"$ref": "#/defs/treemapTransform"
},
{
"$ref": "#/defs/voronoiTransform"
},
{
"$ref": "#/defs/wordcloudTransform"
}
]
}
},
"scale": {
"title": "Scale function",
"type": "object",
"allOf": [
{
"properties": {
"name": {
"type": "string"
},
"type": {
"enum": [
"linear",
"ordinal",
"time",
"utc",
"log",
"pow",
"sqrt",
"quantile",
"quantize",
"threshold"
],
"default": "linear"
},
"domain": {
"oneOf": [
{
"type": "array",
"items": {
"oneOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
}
},
{
"$ref": "#/refs/data"
}
]
},
"domainMin": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/data"
},
{
"$ref": "#/refs/signal"
}
]
},
"domainMax": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/data"
},
{
"$ref": "#/refs/signal"
}
]
},
"rangeMin": {
"oneOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"rangeMax": {
"oneOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"reverse": {
"oneOf": [
{
"type": "boolean"
},
{
"$ref": "#/refs/data"
}
]
},
"round": {
"type": "boolean"
}
},
"required": [
"name"
]
},
{
"oneOf": [
{
"properties": {
"type": {
"enum": [
"ordinal"
]
},
"range": {
"oneOf": [
{
"enum": [
"width",
"height",
"shapes",
"category10",
"category20"
]
},
{
"type": "array",
"items": {
"oneOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
}
},
{
"$ref": "#/refs/signal"
},
{
"$ref": "#/refs/data"
}
]
},
"points": {
"oneOf": [
{
"type": "boolean"
},
{
"$ref": "#/refs/signal"
}
]
},
"padding": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"outerPadding": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
},
"bandWidth": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
}
},
"required": [
"type"
]
},
{
"properties": {
"type": {
"enum": [
"time",
"utc"
]
},
"range": {
"oneOf": [
{
"enum": [
"width",
"height",
"shapes",
"category10",
"category20"
]
},
{
"type": "array",
"items": {
"oneOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
}
},
{
"$ref": "#/refs/signal"
}
]
},
"clamp": {
"oneOf": [
{
"type": "boolean"
},
{
"$ref": "#/refs/signal"
}
]
},
"nice": {
"oneOf": [
{
"enum": [
"second",
"minute",
"hour",
"day",
"week",
"month",
"year"
]
},
{
"$ref": "#/refs/signal"
}
]
}
},
"required": [
"type"
]
},
{
"anyOf": [
{
"properties": {
"type": {
"enum": [
"linear",
"log",
"pow",
"sqrt",
"quantile",
"quantize",
"threshold"
],
"default": "linear"
},
"range": {
"oneOf": [
{
"enum": [
"width",
"height",
"shapes",
"category10",
"category20"
]
},
{
"type": "array",
"items": {
"oneOf": [
{
"type": "string"
},
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
}
},
{
"$ref": "#/refs/signal"
}
]
},
"clamp": {
"oneOf": [
{
"type": "boolean"
},
{
"$ref": "#/refs/signal"
}
]
},
"nice": {
"oneOf": [
{
"type": "boolean"
},
{
"$ref": "#/refs/signal"
}
]
},
"zero": {
"oneOf": [
{
"type": "boolean"
},
{
"$ref": "#/refs/signal"
}
]
}
}
},
{
"properties": {
"type": {
"enum": [
"pow"
]
},
"exponent": {
"oneOf": [
{
"type": "number"
},
{
"$ref": "#/refs/signal"
}
]
}
},
"required": [
"type"
]
}
]
}
]
}
]
}
},
"refs": {
"operand": {
"type": "object",
"oneOf": [
{
"properties": {
"value": {}
},
"required": [
"value"
]
},
{
"properties": {
"arg": {
"type": "string"
}
},
"required": [
"arg"
]
},
{
"$ref": "#/refs/signal"
},
{
"properties": {
"predicate": {
"oneOf": [
{
"type": "string"
},
{
"type": "object",
"properties": {
"name": {
"type": "string"
}
},
"required": [
"name"
]
}
]
}
},
"required": [
"predicate"
]
}
]
},
"field": {
"title": "FieldRef",
"oneOf": [
{
"type": "string"
},
{
"oneOf": [
{
"$ref": "#/refs/signal"
},
{
"type": "object",
"properties": {
"datum": {
"$ref": "#/refs/field"
}
},
"required": [
"datum"
],
"additionalProperties": false
},
{
"type": "object",
"properties": {
"group": {
"$ref": "#/refs/field"
},
"level": {
"type": "number"
}
},
"required": [
"group"
],
"additionalProperties": false
},
{
"type": "object",
"properties": {
"parent": {
"$ref": "#/refs/field"
},
"level": {
"type": "number"
}
},
"required": [
"parent"
],
"additionalProperties": false
}
]
}
]
},
"scale": {
"title": "ScaleRef",
"oneOf": [
{
"$ref": "#/refs/field"
},
{
"type": "object",
"properties": {
"name": {
"$ref": "#/refs/field"
},
"invert": {
"type": "boolean",
"default": false
}
},
"required": [
"name"
]
}
]
},
"stringModifiers": {
"properties": {
"scale": {
"$ref": "#/refs/scale"
}
}
},
"numberModifiers": {
"properties": {
"mult": {
"type": "number"
},
"offset": {
"type": "number"
},
"scale": {
"$ref": "#/refs/scale"
}
}
},
"value": {
"oneOf": [
{
"type": "object",
"properties": {
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"items": {
"allOf": [
{
"type": "object",
"properties": {
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{
"type": "string"
},
{
"type": "object",
"properties": {
"name": {
"type": "string"
}
},
"required": [
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]
}
]
}
}
},
{
"type": "object",
"allOf": [
{
"$ref": "#/refs/stringModifiers"
},
{
"oneOf": [
{
"$ref": "#/refs/signal",
"required": [
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]
},
{
"properties": {
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}
},
"required": [
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},
{
"properties": {
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}
},
"required": [
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},
{
"properties": {
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}
},
"required": [
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}
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},
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{
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{
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{
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{
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"properties": {
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},
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}
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}
},
{
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{
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"required": [
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{
"properties": {
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},
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},
{
"properties": {
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},
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},
{
"properties": {
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},
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},
{
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{
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{
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"required": [
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},
{
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},
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},
{
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{
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}
]
},
"numberValue": {
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{
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{
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{
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}
},
{
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},
{
"oneOf": [
{
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"required": [
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},
{
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{
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{
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{
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}
},
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},
"$ref": "#/defs/spec"
}
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