Export-charts.ps1
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<#
.Synopsis Exports the charts in an Excel spreadSheet .Example Export-Charts .\test.xlsx Exports the charts in test.xlsx to JPEG files in the current directory. .Example Export-Charts -path .\test,xlsx -destination [System.Environment+SpecialFolder]::MyDocuments -outputType PNG -passthrough Exports the charts to PNG files in MyDocuments , and returns file objects representing the newly created files #> Param ( #Path to the Excel file whose chars we will export. $Path = "C:\Users\public\Documents\stats.xlsx", #If specified, output file objects representing the image files [switch]$Passthru, #Format to write - JPG by default [ValidateSet("JPG","PNG","GIF")] $OutputType = "JPG", #Folder to write image files to (defaults to same one as the Excel file is in) $Destination ) #if no output folder was specified, set destination to the folder where the Excel file came from if (-not $Destination) {$Destination = Split-Path -Path $Path -Parent } #Call up Excel and tell it to open the file. try { $excelApp = New-Object -ComObject "Excel.Application" } catch { Write-Warning "Could not start Excel application - which usually means it is not installed." ; return } try { $excelWorkBook = $excelApp.Workbooks.Open($Path) } catch { Write-Warning -Message "Could not Open $Path." ; return } #For each worksheet, for each chart, jump to the chart, create a filename of "WorksheetName_ChartTitle.jpg", and export the file. foreach ($excelWorkSheet in $excelWorkBook.Worksheets) { #note somewhat unusual way of telling excel we want all the charts. foreach ($excelchart in $excelWorkSheet.ChartObjects([System.Type]::Missing)) { #if you don't go to the chart the image will be zero size ! $excelApp.Goto($excelchart.TopLeftCell,$true) $imagePath = Join-Path -Path $Destination -ChildPath ($excelWorkSheet.Name + "_" + ($excelchart.Chart.ChartTitle.Text -split "\s\d\d:\d\d,")[0] + ".$OutputType") if ( $excelchart.Chart.Export($imagePath, $OutputType, $false) ) { # Export returs true/false for success/failure if ($Passthru) {Get-Item -Path $imagePath } # when succesful return a file object (-Passthru) or print a verbose message, write warning for any failures else {Write-Verbose -Message "Exported $imagePath"} } else {Write-Warning -Message "Failure exporting $imagePath" } } } $excelApp.DisplayAlerts = $false $excelWorkBook.Close($false,$null,$null) $excelApp.Quit() |