Add comprehensive tests for X-Axis configuration fix

Co-authored-by: dfinke <67258+dfinke@users.noreply.github.com>

.github/workflows/ci.yml

@@ -3,8 +3,11 @@ on:
     branches:
       - master
       - Set-up-GHA-CI/CD
+    paths-ignore:
+      - 'Examples/**'
       
   pull_request:
+  
 
 jobs:
   validate:

Examples/Charts/ChartDataSeparatePage.ps1

@@ -0,0 +1,35 @@
+$data = ConvertFrom-Csv @"
+Region,State,Units,Price
+West,Texas,927,923.71
+North,Tennessee,466,770.67
+East,Florida,520,458.68
+East,Maine,828,661.24
+West,Virginia,465,053.58
+North,Missouri,436,235.67
+South,Kansas,214,992.47
+North,North Dakota,789,640.72
+South,Delaware,712,508.55
+"@
+
+$xlfile = "$PSScriptRoot\spike.xlsx"
+Remove-Item $xlfile -ErrorAction SilentlyContinue
+
+$xlpkg = $data | Export-Excel $xlfile -WorksheetName Data -AutoNameRange -PassThru
+
+$null = Add-Worksheet -ExcelPackage $xlpkg -WorksheetName Summary -Activate
+
+$params = @{
+    Worksheet = $xlpkg.Summary
+    Title     = "Sales by Region"
+    ChartType = 'ColumnClustered'
+    
+    # XRange    = "Data!A2:A10"
+    # YRange    = "Data!C2:C10"
+
+    XRange    = 'Data!Region'
+    YRange    = 'Data!Units'
+}
+
+Add-ExcelChart  @params
+
+Close-ExcelPackage $xlpkg -Show

ImportExcel.psd1

@@ -6,7 +6,7 @@
     RootModule         = 'ImportExcel.psm1'
 
     # Version number of this module.
-    ModuleVersion      = '7.8.4'
+    ModuleVersion      = '7.8.10'
 
     # ID used to uniquely identify this module
     GUID               = '60dd4136-feff-401a-ba27-a84458c57ede'
@@ -54,6 +54,7 @@ Check out the How To Videos https://www.youtube.com/watch?v=U3Ne_yX4tYo&list=PL5
         'Export-Excel',
         'Export-ExcelSheet',        
         'Get-ExcelColumnName',
+        'Get-ExcelFileSchema',
         'Get-ExcelFileSummary', 
         'Get-ExcelSheetDimensionAddress',       
         'Get-ExcelSheetInfo',
@@ -149,7 +150,7 @@ Check out the How To Videos https://www.youtube.com/watch?v=U3Ne_yX4tYo&list=PL5
             Tags         = @("Excel", "EPPlus", "Export", "Import")
 
             # The web address of an icon which can be used in galleries to represent this module
-            #IconUri = "http://pesterbdd.com/images/Pester.png"
+            #IconUri = 
 
             # The web address of this module's project or support homepage.
             ProjectUri   = "https://github.com/dfinke/ImportExcel"
@@ -214,4 +215,4 @@ Check out the How To Videos https://www.youtube.com/watch?v=U3Ne_yX4tYo&list=PL5
     # Default prefix for commands exported from this module. Override the default prefix using Import-Module -Prefix.
     # DefaultCommandPrefix = ''
 
-}
+}

Private/ArgumentCompletion.ps1

@@ -67,9 +67,8 @@ function WorksheetArgumentCompleter {
     param($commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameter)
     $xlPath = $fakeBoundParameter['Path']
     if (Test-Path -Path $xlPath) {
-        $xlpkg = Open-ExcelPackage -ReadOnly -Path $xlPath
-        $WorksheetNames = $xlPkg.Workbook.Worksheets.Name
-        Close-ExcelPackage -nosave -ExcelPackage $xlpkg
+        $xlSheet = Get-ExcelSheetInfo -Path $xlPath
+        $WorksheetNames = $xlSheet.Name
         $WorksheetNames.where( { $_ -like "*$wordToComplete*" }) | foreach-object {
             New-Object -TypeName System.Management.Automation.CompletionResult -ArgumentList "'$_'",
             $_ , ([System.Management.Automation.CompletionResultType]::ParameterValue) , $_

Public/Add-ExcelChart.ps1

@@ -113,6 +113,57 @@ function Add-ExcelChart {
         if ($null -ne $XMinValue) { $chart.XAxis.MinValue = $XMinValue }
         if ($null -ne $XMaxValue) { $chart.XAxis.MaxValue = $XMaxValue }
         if ($XAxisNumberformat) { $chart.XAxis.Format = (Expand-NumberFormat $XAxisNumberformat) }
+        
+        # Fix for category axis (used in line charts, etc.): EPPlus doesn't serialize MajorUnit/MinorUnit to XML for category axes
+        # We need to manually add these elements to the XML if they were specified
+        if ($XMajorUnit -or $XMinorUnit) {
+            $chartXml = $chart.ChartXml
+            $nsManager = New-Object System.Xml.XmlNamespaceManager($chartXml.NameTable)
+            $null = $nsManager.AddNamespace("c", "http://schemas.openxmlformats.org/drawingml/2006/chart")
+            $catAx = $chartXml.SelectSingleNode("//c:catAx", $nsManager)
+            
+            if ($catAx) {
+                # Category axis exists - need to add majorUnit/minorUnit elements
+                if ($XMajorUnit) {
+                    $existingMajorUnit = $catAx.SelectSingleNode("c:majorUnit", $nsManager)
+                    if (-not $existingMajorUnit) {
+                        $majorUnitElement = $chartXml.CreateElement("c", "majorUnit", "http://schemas.openxmlformats.org/drawingml/2006/chart")
+                        $null = $majorUnitElement.SetAttribute("val", $XMajorUnit)
+                        # Insert after scaling element or at the beginning
+                        $scalingNode = $catAx.SelectSingleNode("c:scaling", $nsManager)
+                        if ($scalingNode) {
+                            $null = $catAx.InsertAfter($majorUnitElement, $scalingNode)
+                        } else {
+                            $null = $catAx.PrependChild($majorUnitElement)
+                        }
+                    } else {
+                        $null = $existingMajorUnit.SetAttribute("val", $XMajorUnit)
+                    }
+                }
+                
+                if ($XMinorUnit) {
+                    $existingMinorUnit = $catAx.SelectSingleNode("c:minorUnit", $nsManager)
+                    if (-not $existingMinorUnit) {
+                        $minorUnitElement = $chartXml.CreateElement("c", "minorUnit", "http://schemas.openxmlformats.org/drawingml/2006/chart")
+                        $null = $minorUnitElement.SetAttribute("val", $XMinorUnit)
+                        # Insert after majorUnit if it exists, otherwise after scaling
+                        $majorUnitNode = $catAx.SelectSingleNode("c:majorUnit", $nsManager)
+                        if ($majorUnitNode) {
+                            $null = $catAx.InsertAfter($minorUnitElement, $majorUnitNode)
+                        } else {
+                            $scalingNode = $catAx.SelectSingleNode("c:scaling", $nsManager)
+                            if ($scalingNode) {
+                                $null = $catAx.InsertAfter($minorUnitElement, $scalingNode)
+                            } else {
+                                $null = $catAx.PrependChild($minorUnitElement)
+                            }
+                        }
+                    } else {
+                        $null = $existingMinorUnit.SetAttribute("val", $XMinorUnit)
+                    }
+                }
+            }
+        }
 
         if ($YAxisTitleText) {
             $chart.YAxis.Title.Text = $YAxisTitleText

Public/ConvertFrom-ExcelData.ps1

@@ -8,7 +8,8 @@ function ConvertFrom-ExcelData {
         [ScriptBlock]$ScriptBlock,
         [Alias("Sheet")]
         $WorksheetName = 1,
-        [int]$HeaderRow = 1,
+		[Alias('HeaderRow', 'TopRow')]
+        [int]$StartRow = 1,
         [string[]]$Header,
         [switch]$NoHeader,
         [switch]$DataOnly

Public/ConvertTo-ExcelXlsx.ps1

@@ -45,11 +45,18 @@ function ConvertTo-ExcelXlsx {
             throw "Could not create Excel.Application ComObject. Please verify that Excel is installed."
         }
 
-        $Excel.Visible = $false
-        $null = $Excel.Workbooks.Open($xlsFile.FullName)
-        $Excel.ActiveWorkbook.SaveAs($xlsxPath, $xlFixedFormat)
-        $Excel.ActiveWorkbook.Close()
-        $Excel.Quit()
+        try {  
+            $Excel.Visible = $false
+            $null = $Excel.Workbooks.Open($xlsFile.FullName, $null, $true)
+            $Excel.ActiveWorkbook.SaveAs($xlsxPath, $xlFixedFormat)
+        }
+        finally {
+            if ($null -ne $Excel.ActiveWorkbook) {
+                $Excel.ActiveWorkbook.Close()
+            }
+            
+            $Excel.Quit()
+        }
     }
 }
 

Public/Get-ExcelFileSchema.ps1

@@ -0,0 +1,47 @@
+function Get-ExcelFileSchema {
+    <#
+        .SYNOPSIS
+            Gets the schema of an Excel file.
+
+        .DESCRIPTION
+            The Get-ExcelFileSchema function gets the schema of an Excel file by returning the property names of the first row of each worksheet in the file.
+
+        .PARAMETER Path
+            Specifies the path to the Excel file.
+
+        .PARAMETER Compress
+            Indicates whether to compress the json output.
+
+        .OUTPUTS
+            Json
+
+        .EXAMPLE
+            Get-ExcelFileSchema -Path .\example.xlsx
+    #>
+
+    [CmdletBinding()]
+    param(
+        [Parameter(ValueFromPipelineByPropertyName, Mandatory)]
+        [Alias('FullName')]    
+        $Path,
+        [Switch]$Compress
+    )
+
+    Begin {
+        $result = @()
+    }
+
+    Process {        
+        $excelFiles = Get-ExcelFileSummary $Path
+        
+        foreach ($excelFile in $excelFiles) {
+            $data = Import-Excel $Path -WorksheetName $excelFile.WorksheetName | Select-Object -First 1
+            $names = $data[0].PSObject.Properties.name
+            $result += $excelFile | Add-Member -MemberType NoteProperty -Name "PropertyNames" -Value $names -PassThru
+        }
+    }
+
+    End {
+        $result | ConvertTo-Json -Compress:$Compress
+    }
+}

Public/Get-HtmlTable.ps1

@@ -50,7 +50,9 @@ function Get-HtmlTable {
     else {
         $h    = ConvertFrom-Html -Content $r.Content
         if ($TableIndex -is [valuetype]) { $TableIndex += 1}
-        $rows =    $h.SelectNodes("//table[$TableIndex]//tr")
+        $rows = try {
+               $h.SelectSingleNode("//table[$TableIndex]").SelectNodes(".//tr")
+        } catch {}
         if (-not $rows) {Write-Warning "Could not find rows for `"//table[$TableIndex]`" in $Url ."}
         if ( -not  $propertyNames) {
             if (   $tableHeaders  = $rows[$FirstDataRow].SelectNodes("th")) {

README.md

@@ -19,10 +19,13 @@ Consider donating. Thank you!
 <br>
 <br>
 
-[![Build Status](https://dougfinke.visualstudio.com/ImportExcel/_apis/build/status/dfinke.ImportExcel?branchName=master)](https://dougfinke.visualstudio.com/ImportExcel/_build)
+[![Follow on Twitter](https://img.shields.io/twitter/follow/dfinke.svg?style=social&label=Follow%20%40dfinke)](https://twitter.com/dfinke)
+[![Subscribe on YouTube](https://img.shields.io/youtube/channel/subscribers/UCP47ZkO5EDkoI2sr-3P4ShQ
+)](https://youtube.com/@dougfinke/)
+<br/>
+<br/>
 [![](https://img.shields.io/powershellgallery/v/ImportExcel.svg)](https://www.powershellgallery.com/packages/ImportExcel)
 [![](https://img.shields.io/powershellgallery/dt/ImportExcel.svg)](https://www.powershellgallery.com/packages/ImportExcel)
-[![](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://github.com/dfinke/ImportExcel/tree/70ab9e46c776e96fb287682d5b9b4b51a0ec3bac/LICENSE.txt)
 <a href="https://www.paypal.com/paypalme/DougCharlesFinke"><img src="https://img.shields.io/badge/Donate-PayPal-green.svg" alt="Donate"></a>
 
 # Overview

__tests__/Add-ExcelChart-XAxis.Tests.ps1

@@ -0,0 +1,135 @@
+# Test for X-Axis configuration on line charts
+# This test verifies that XMajorUnit and XMinorUnit parameters work correctly for line charts
+
+Describe "X-Axis Configuration for Line Charts" {
+    BeforeAll {
+        $path = "TestDrive:\xaxis_test.xlsx"
+    }
+
+    Context "X-Axis MajorUnit and MinorUnit on Line Charts" {
+        BeforeAll {
+            # Create test data
+            $excel = 1..7 | ForEach-Object { 
+                [pscustomobject][ordered]@{
+                    XValue = @(5, 10, 15, 20, 25, 30, 35)[$_ - 1]
+                    YValue = @(18, 11, 23, 17, 12, 32, 12)[$_ - 1]
+                } 
+            } | Export-Excel -Path $path -WorksheetName "Test" -PassThru -AutoNameRange
+            
+            # Add chart with X-axis configuration
+            Add-ExcelChart -Worksheet $excel.Workbook.Worksheets["Test"] `
+                -ChartType Line `
+                -XRange "XValue" `
+                -YRange "YValue" `
+                -Title "Test Chart" `
+                -XMinValue 0 `
+                -XMaxValue 40 `
+                -XMajorUnit 10 `
+                -XMinorUnit 5 `
+                -YMinValue 0 `
+                -YMaxValue 40 `
+                -YMajorUnit 10 `
+                -YMinorUnit 5
+            
+            Close-ExcelPackage $excel
+            
+            # Reopen to verify
+            $excel = Open-ExcelPackage -Path $path
+            $ws = $excel.Workbook.Worksheets["Test"]
+            $chart = $ws.Drawings[0]
+        }
+        
+        It "Set XAxis.MinValue correctly" {
+            $chart.XAxis.MinValue | Should -Be 0
+        }
+        
+        It "Set XAxis.MaxValue correctly" {
+            $chart.XAxis.MaxValue | Should -Be 40
+        }
+        
+        It "Set XAxis.MajorUnit correctly" {
+            $chart.XAxis.MajorUnit | Should -Be 10
+        }
+        
+        It "Set XAxis.MinorUnit correctly" {
+            $chart.XAxis.MinorUnit | Should -Be 5
+        }
+        
+        It "Added MajorUnit to category axis XML" {
+            $xml = $chart.ChartXml
+            $nsmgr = New-Object System.Xml.XmlNamespaceManager($xml.NameTable)
+            $nsmgr.AddNamespace("c", "http://schemas.openxmlformats.org/drawingml/2006/chart")
+            $catAx = $xml.SelectSingleNode("//c:catAx", $nsmgr)
+            $majorUnit = $catAx.SelectSingleNode("c:majorUnit", $nsmgr)
+            
+            $majorUnit | Should -Not -BeNullOrEmpty
+            $majorUnit.val | Should -Be "10"
+        }
+        
+        It "Added MinorUnit to category axis XML" {
+            $xml = $chart.ChartXml
+            $nsmgr = New-Object System.Xml.XmlNamespaceManager($xml.NameTable)
+            $nsmgr.AddNamespace("c", "http://schemas.openxmlformats.org/drawingml/2006/chart")
+            $catAx = $xml.SelectSingleNode("//c:catAx", $nsmgr)
+            $minorUnit = $catAx.SelectSingleNode("c:minorUnit", $nsmgr)
+            
+            $minorUnit | Should -Not -BeNullOrEmpty
+            $minorUnit.val | Should -Be "5"
+        }
+        
+        AfterAll {
+            Close-ExcelPackage $excel -NoSave
+        }
+    }
+    
+    Context "X-Axis without MajorUnit and MinorUnit" {
+        BeforeAll {
+            $path2 = "TestDrive:\xaxis_test2.xlsx"
+            # Create test data without X-axis units
+            $excel2 = 1..7 | ForEach-Object { 
+                [pscustomobject][ordered]@{
+                    XValue = @(5, 10, 15, 20, 25, 30, 35)[$_ - 1]
+                    YValue = @(18, 11, 23, 17, 12, 32, 12)[$_ - 1]
+                } 
+            } | Export-Excel -Path $path2 -WorksheetName "Test" -PassThru -AutoNameRange
+            
+            # Add chart WITHOUT X-axis MajorUnit/MinorUnit
+            Add-ExcelChart -Worksheet $excel2.Workbook.Worksheets["Test"] `
+                -ChartType Line `
+                -XRange "XValue" `
+                -YRange "YValue" `
+                -Title "Test Chart"
+            
+            Close-ExcelPackage $excel2
+            
+            # Reopen to verify
+            $excel2 = Open-ExcelPackage -Path $path2
+            $ws2 = $excel2.Workbook.Worksheets["Test"]
+            $chart2 = $ws2.Drawings[0]
+        }
+        
+        It "Should not add MajorUnit to category axis XML when not specified" {
+            $xml = $chart2.ChartXml
+            $nsmgr = New-Object System.Xml.XmlNamespaceManager($xml.NameTable)
+            $nsmgr.AddNamespace("c", "http://schemas.openxmlformats.org/drawingml/2006/chart")
+            $catAx = $xml.SelectSingleNode("//c:catAx", $nsmgr)
+            $majorUnit = $catAx.SelectSingleNode("c:majorUnit", $nsmgr)
+            
+            $majorUnit | Should -BeNullOrEmpty
+        }
+        
+        It "Should not add MinorUnit to category axis XML when not specified" {
+            $xml = $chart2.ChartXml
+            $nsmgr = New-Object System.Xml.XmlNamespaceManager($xml.NameTable)
+            $nsmgr.AddNamespace("c", "http://schemas.openxmlformats.org/drawingml/2006/chart")
+            $catAx = $xml.SelectSingleNode("//c:catAx", $nsmgr)
+            $minorUnit = $catAx.SelectSingleNode("c:minorUnit", $nsmgr)
+            
+            $minorUnit | Should -BeNullOrEmpty
+        }
+        
+        AfterAll {
+            Close-ExcelPackage $excel2 -NoSave
+        }
+    }
+}

__tests__/Get-ExcelFileSchema.tests.ps1

@@ -0,0 +1,54 @@
+if (-not (Get-command Import-Excel -ErrorAction SilentlyContinue)) {
+    Import-Module $PSScriptRoot\..\ImportExcel.psd1
+}
+
+Describe "Test getting the schema of an Excel file" -Tag GetExcelFileSchema {
+
+    BeforeAll {
+        $script:excelFile = "TestDrive:\test.xlsx"
+        $data = ConvertFrom-Csv @"
+Region,State,Units,Price
+West,Texas,927,923.71
+North,Tennessee,466,770.67
+East,Florida,520,458.68
+East,Maine,828,661.24
+West,Virginia,465,053.58
+North,Missouri,436,235.67
+South,Kansas,214,992.47
+North,North Dakota,789,640.72
+South,Delaware,712,508.55
+"@
+        $data | Export-Excel $excelFile 
+    }
+
+    It "Test Get-ExcelFileSchema function exists" {        
+        $function = Get-Command Get-ExcelFileSchema -ErrorAction SilentlyContinue
+        $function | Should -Not -Be $null
+    }
+
+    It "Test Get-ExcelFileSchema returns json" {
+        $actual = Get-ExcelFileSchema -Path $excelFile
+        $actual | Should -Not -Be $null
+        $actual | Should -BeOfType [string]        
+    }
+
+    It "Test Get-ExcelFileSchema correct json" {
+        $actual = Get-ExcelFileSchema -Path $excelFile
+        $actual = $actual | ConvertFrom-Json 
+
+        $actual.ExcelFile | Should -BeExactly "test.xlsx"
+        $actual.WorksheetName | Should -BeExactly "Sheet1"
+        $actual.Visible | Should -Be $true
+        $actual.Rows | Should -Be 10
+        $actual.Columns | Should -Be 4
+        $actual.Address | Should -BeExactly "A1:D10"
+        
+        $actual.Path | Should -BeExactly ("TestDrive:" + [System.IO.Path]::DirectorySeparatorChar)
+        
+        $actual.PropertyNames.Count | Should -Be 4
+        $actual.PropertyNames[0] | Should -BeExactly "Region"
+        $actual.PropertyNames[1] | Should -BeExactly "State"
+        $actual.PropertyNames[2] | Should -BeExactly "Units"
+        $actual.PropertyNames[3] | Should -BeExactly "Price"
+    }
+}

changelog.md

@@ -1,3 +1,60 @@
+# 7.8.10
+
+- Thank you https://github.com/evenmartinsen for the PR to fix the AV
+
+# 7.8.9
+
+- Thanks to (Edward Miller)[https://github.com/edwardmiller-mesirow] for improving `ConvertTo-ExcelXlsx`and making it more robust
+
+# 7.8.8
+
+- Fix the release
+
+# 7.8.7
+
+- Thanks to [Phil Bossman](https://github.com/pbossman) for the PR and fixing this.
+    
+    Now, back again, you can type `Import-Excel .\yearlySales.xlsx`, press <ctrl+space> and get a list of the worksheets in the Excel file
+
+    ![alt text](images/AutoCompleteSheetNames.png)    
+
+# Infrastructure change
+
+- Thank you to [RipFence](https://github.com/RipFence) who asked how to place a chart on a different sheet from the data and then did a PR adding the example.
+- added `ignore` so files checked into examples do not trigger a CI run
+
+# 7.8.6
+
+- Thank you [John Boyne](https://github.com/kyllath)
+    - Add missing parameter aliases to align with caller/callee
+
+# 7.8.5
+
+- Added `Get-ExcelFileSchema` to get the schema of an Excel file.
+- This was added to support interacting with `ChatGPT`. Passing the schema to the `ChatGPT` via `PowerShellAI` let's you ask questions about the data including generating code based on the schema.
+
+```powershell
+Get-ExcelFileSchema .\salesData.xlsx
+```
+
+```json
+{
+  "ExcelFile": "salesData.xlsx",
+  "WorksheetName": "Sheet1",
+  "Visible": true,
+  "Rows": 10,
+  "Columns": 4,
+  "Address": "A1:D10",
+  "Path": ".",
+  "PropertyNames": [
+    "Region",
+    "State",
+    "Units",
+    "Price"
+  ]
+}
+```
+
 # 7.8.x
 
 Thanks to [Thomas Hofkens](https://github.com/thkn-hofa)

mdHelp/en/add-conditionalformatting.md

@@ -66,7 +66,7 @@ PS\> $excel = $avdata | Export-Excel -Path (Join-path $FilePath "\Machines.XLSX"
      $excel.Save() ; $excel.Dispose()
 ```
 
-Here Export-Excel is called with the -PassThru parameter, so the ExcelPackage object representing Machines.XLSX is stored in $Excel.The desired worksheet is selected, and then columns" B" and "I" are conditionally formatted \(excluding the top row\) to show red text if they contain "2003" or "Disabled" respectively.
+Here Export-Excel is called with the -PassThru parameter, so the ExcelPackage object representing Machines.XLSX is stored in $Excel. The desired worksheet is selected, and then columns" B" and "I" are conditionally formatted \(excluding the top row\) to show red text if they contain "2003" or "Disabled" respectively.
 
 A fixed date format is then applied to columns D to G, and the top row is formatted.
 
@@ -83,7 +83,7 @@ Again Export-Excel has been called with -PassThru leaving a package object in $E
 
 This time B1:B100 has been conditionally formatted with 3 icons, using the "Flags" Icon-Set.
 
-Add-ConditionalFormatting does not provide accessto every option in the formatting rule, so -PassThru has been used and the rule is modified to apply the flags in reverse order, and transitions between flags are set to 100 and 1000.
+Add-ConditionalFormatting does not provide access to every option in the formatting rule, so -PassThru has been used and the rule is modified to apply the flags in reverse order, and transitions between flags are set to 100 and 1000.
 
 ### EXAMPLE 3
 

mdHelp/en/add-excelchart.md

@@ -81,7 +81,7 @@ PS\> $Excel = Invoke-Sum (Get-Process) Company Handles, PM, VirtualMemorySize |
 
 The first line exports information to a table in new file; and captures the excel Package object in $Excel
 
-The second line creates a chart on the first page of the work sheet, using the notation "TableName\[ColumnnName\]" to refer to the data, the labels come Name column in the table, and the data series from its PM and VirtualMemorySize columns. The display names for these in the header are set to 'PM' and 'VMSize'.
+The second line creates a chart on the first page of the work sheet, using the notation "TableName\[ColumnName\]" to refer to the data, the labels come Name column in the table, and the data series from its PM and VirtualMemorySize columns. The display names for these in the header are set to 'PM' and 'VMSize'.
 
 ### EXAMPLE 4