Generate Pixel Per Inches for Monitor size based on horizontal resolution, vertical resolution, and diagonal monitor size.

Get-PixelDensity.ps1

<#
.Synopsis
   Generate Pixel Per Inches for Monitor size.
.DESCRIPTION
   Generate Pixel Per Inches for Monitor size based on horizontal resolution, vertical resolution, and diagonal monitor size.
.EXAMPLE
   Get-PixelDensity -HorizontalResolution 1920 -VerticalResolution 1080 -MonitorSize 24
#>
function Get-PixelDensity
{
    [CmdletBinding()]
    Param
    (
        # Param1 help description
        [Parameter(Position=0)]
        [int]$HorizontalResolution=2560,

        # Param2 help description
        [Parameter(Position=1)]
        [int]$VerticalResolution = 1440,

        # Param2 help description
        [Parameter(Position=2)]
        [int]$MonitorSize = 27
    )

    Begin
    {
        $HorizontalResolutionPow = [math]::Pow($HorizontalResolution,2)
        $VerticalResolutionPow = [math]::Pow($VerticalResolution,2)
    }
    Process
    {
        $Diagonal_Resolution = [math]::Pow(($HorizontalResolutionPow + $VerticalResolutionPow),0.5)

        New-Object PSObject -Property @{
            MonitorSize = $MonitorSize
            HorizontalResolution = $HorizontalResolution
            VerticalResolution = $VerticalResolution
            PixelsPerInch = $Diagonal_Resolution / $MonitorSize
        }
    }
    End
    {
    }
}