Powershell Graphs

Question

Hi,
I'm trying to change the color of the values at the moment it does a yellow and blue and i would like red for disk used and green for disk free, but wondering what command i would need to input.
here is the code i have used some code i found on the internet in the meantime.
Function Create-PieChart() {
param([string]$FileName)
[void][Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
[void][Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms.DataVisualization")
#Create our chart object
$Chart = New-object System.Windows.Forms.DataVisualization.Charting.Chart
$Chart.Width = 400
$Chart.Height = 320
$Chart.Left = 10
$Chart.Top = 10
#Create a chartarea to draw on and add this to the chart
$ChartArea = New-Object System.Windows.Forms.DataVisualization.Charting.ChartArea
$Chart.ChartAreas.Add($ChartArea)
[void]$Chart.Series.Add("Data")
#Add a datapoint for each value specified in the arguments (args)
foreach ($value in $args[0]) {
Write-Host "Now processing chart value: " + $value
$datapoint = new-object System.Windows.Forms.DataVisualization.Charting.DataPoint(0, $value)
$datapoint.AxisLabel = "Value" + "(" + $value + " GB)"
$Chart.Series["Data"].Points.Add($datapoint)
$Chart.Series["Data"].ChartType = [System.Windows.Forms.DataVisualization.Charting.SeriesChartType]::Pie
$Chart.Series["Data"]["PieLabelStyle"] = "Outside"
$Chart.Series["Data"]["PieLineColor"] = "Black"
$Chart.Series["Data"]["PieDrawingStyle"] = "Concave"
$Chart.Series["Data"]
($Chart.Series["Data"].Points.FindMaxByValue())["Exploded"] = $true
#Set the title of the Chart to the current date and time
$Title = new-object System.Windows.Forms.DataVisualization.Charting.Title
$Chart.Titles.Add($Title)
$Chart.Titles[0].Text = "Disk Usage Chart (Used/Free)"
#Save the chart to a file
$Chart.SaveImage($FileName + ".png","png")
# Disk Space Fucntions
$Disks = @(gwmi Win32_LogicalDisk -Filter "DriveType=3")
foreach($disk in $Disks)
$UsedDisk = [System.Math]::Round(($disk.Size - $disk.freespace)/1gb)
$FreeDisk = [System.Math]::Round($disk.freespace/1gb)
# Where the graph is going to get saved too
Create-PieChart -FileName ((Get-Location).Path + "\chart-$computer") $FreeDisk, $UsedDisk
$ListOfAttachments += "chart-$computer.png"

Answer 1

Start with this and try to understand how and why it works the way it does. You will discover why your version fails.
#region Application Functions
function OnApplicationLoad {
return $true #return true for success or false for failure
function OnApplicationExit {
$script:ExitCode = 0 #Set the exit code for the Packager
#endregion Application Functions
# Generated Form Function
function Call-Demo-Chart_pff {
#region Import the Assemblies
[void][reflection.assembly]::Load("mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")
[void][reflection.assembly]::Load("System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")
[void][reflection.assembly]::Load("System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")
[void][reflection.assembly]::Load("System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")
[void][reflection.assembly]::Load("System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")
[void][reflection.assembly]::Load("System.Xml, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")
[void][reflection.assembly]::Load("System.DirectoryServices, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")
[void][reflection.assembly]::Load("System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")
[void][reflection.assembly]::Load("System.ServiceProcess, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")
#endregion Import Assemblies
#region Generated Form Objects
[System.Windows.Forms.Application]::EnableVisualStyles()
$form1 = New-Object 'System.Windows.Forms.Form'
$button1 = New-Object 'System.Windows.Forms.Button'
$buttonOK = New-Object 'System.Windows.Forms.Button'
$InitialFormWindowState = New-Object 'System.Windows.Forms.FormWindowState'
#endregion Generated Form Objects
# User Generated Script
[void][Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms.DataVisualization")
$FormEvent_Load={
#TODO: Initialize Form Controls here
Function Create-PieChart{
param(
$VolumeID='C:',
[string]$FileName='c:\temp\chart'
#Create our chart object
$Chart = New-object System.Windows.Forms.DataVisualization.Charting.Chart
$Chart.Width = 400
$Chart.Height = 320
$Chart.Left = 10
$Chart.Top = 10
$form1.Controls.Add($Chart)
#Create a chartarea to draw on and add this to the chart
$ChartArea = New-Object System.Windows.Forms.DataVisualization.Charting.ChartArea
$Chart.ChartAreas.Add($ChartArea)
[void]$Chart.Series.Add("Data")
$disk=gwmi Win32_LogicalDisk -Filter "Name='$VolumeID'"
$FreeSpace=[System.Math]::Round($disk.FreeSpace / $disk.Size * 100)
$datapoint=New-Object System.Windows.Forms.DataVisualization.Charting.DataPoint(0, $FreeSpace)
$datapoint.AxisLabel='Free Space ({0:N1}GB)' -f ($disk.FreeSpace/1Gb)
$datapoint.Color
$Chart.Series["Data"].Points.Add($datapoint)
$UsedSpace=[System.Math]::Round(($disk.Size - $disk.freespace)/$disk.Size * 100)
$datapoint=new-object System.Windows.Forms.DataVisualization.Charting.DataPoint(0, $UsedSpace)
$datapoint.Color='red'
$datapoint.AxisLabel='Used Space ({0:N1}GB)' -f (($disk.Size-$disk.freespace)/1Gb )
$Chart.Series["Data"].Points.Add($datapoint)
$Chart.Series["Data"].ChartType = [System.Windows.Forms.DataVisualization.Charting.SeriesChartType]::Pie
$Chart.Series["Data"]["PieLabelStyle"] = "Outside"
$Chart.Series["Data"]["PieLineColor"] = "Black"
$Chart.Series["Data"]["PieDrawingStyle"] = "Concave"
$Chart.Series["Data"]
($Chart.Series["Data"].Points.FindMaxByValue())["Exploded"] = $true
#Set the title of the Chart to the current date and time
$Title = new-object System.Windows.Forms.DataVisualization.Charting.Title
$Chart.Titles.Add($Title)
$Chart.Titles[0].Text = "Disk Usage Chart for $VolumeID (Used/Free)"
#Save the chart to a file
$Chart.SaveImage($FileName + ".png","png")
$button1_Click={
Create-PieChart
# --End User Generated Script--
#region Generated Events
$Form_StateCorrection_Load=
#Correct the initial state of the form to prevent the .Net maximized form issue
$form1.WindowState = $InitialFormWindowState
$Form_Cleanup_FormClosed=
#Remove all event handlers from the controls
try
$button1.remove_Click($button1_Click)
$form1.remove_Load($FormEvent_Load)
$form1.remove_Load($Form_StateCorrection_Load)
$form1.remove_FormClosed($Form_Cleanup_FormClosed)
catch [Exception]
#endregion Generated Events
#region Generated Form Code
# form1
$form1.Controls.Add($button1)
$form1.Controls.Add($buttonOK)
$form1.AcceptButton = $buttonOK
$form1.ClientSize = '795, 522'
$form1.FormBorderStyle = 'FixedDialog'
$form1.MaximizeBox = $False
$form1.MinimizeBox = $False
$form1.Name = "form1"
$form1.StartPosition = 'CenterScreen'
$form1.Text = "Form"
$form1.add_Load($FormEvent_Load)
# button1
$button1.Location = '481, 487'
$button1.Name = "button1"
$button1.Size = '75, 23'
$button1.TabIndex = 1
$button1.Text = "button1"
$button1.UseVisualStyleBackColor = $True
$button1.add_Click($button1_Click)
# buttonOK
$buttonOK.Anchor = 'Bottom, Right'
$buttonOK.DialogResult = 'OK'
$buttonOK.Location = '708, 487'
$buttonOK.Name = "buttonOK"
$buttonOK.Size = '75, 23'
$buttonOK.TabIndex = 0
$buttonOK.Text = "OK"
$buttonOK.UseVisualStyleBackColor = $True
#endregion Generated Form Code
#Save the initial state of the form
$InitialFormWindowState = $form1.WindowState
#Init the OnLoad event to correct the initial state of the form
$form1.add_Load($Form_StateCorrection_Load)
#Clean up the control events
$form1.add_FormClosed($Form_Cleanup_FormClosed)
#Show the Form
return $form1.ShowDialog()
} #End Function
#Call OnApplicationLoad to initialize
if((OnApplicationLoad) -eq $true)
#Call the form
Call-Demo-Chart_pff | Out-Null
#Perform cleanup
OnApplicationExit
If you want separate charts you will need to generate each one independently.  If you want them all in one image file you will have to use image methods to add them or learn how to generate multiple chart sessions.  Look in gallery as there are
numerous examples.  Search and you will also fin more examples of how to do this.
¯\_(ツ)_/¯