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How can I use an Exclusion Filter in a Voxler script?

This article contains a sample script for loading a data file, adding as exclusion filter to it, changing the legend properties of the exclusion filter, and adding a scatter plot and axes to view the results.

To run this script:

  1. Copy the script below, or click here to download the BAS file: ExclusionFilterModule.bas.
  2. In a Windows Explorer window, navigate to C:\Program Files\Golden Software\Voxler 4\Scripter.
  3. Double click on Scripter.exe to launch Scripter.
  4. Press Ctrl+A to select all of the existing lines then press Delete.
  5. If you copied this script, press Ctrl+V to paste it into Scripter. If you downloaded it, click File | Open, select the BAS file from your downloads directory, and click Open.
  6. Click Script | Run to run the script.
     

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'********************************************************************************************
' ExclusionFilterModule.bas
' This script loads a data file and adds a exclusion filter to it.
' It then changes the legend properties of the exclusion filter.
' It then adds a scatter plot and axes to view the results.
'********************************************************************************************

' If Voxler is running, retrieve the current instance of Voxler.  Otherwise,
' create a new instance of Voxler.
Function VoxlerApplication()
   On Error Resume Next
   Set VoxlerApplication = GetObject(, "Voxler.Application")
   If Err.Number <> 0 Then
      Set VoxlerApplication = CreateObject("Voxler.Application")
   End If
   On Error GoTo 0
End Function

Sub Main
 'Retrieve running instance of Voxler or create a new instance of Voxler
  Dim VoxlerApp As Object
  Set VoxlerApp = VoxlerApplication()

 'Make Voxler visible
  VoxlerApp.Visible = True

 'Access CommandApi
  Set CommandApi = VoxlerApp.CommandApi

 'Create a new Voxler document
  CommandApi.Construct ("New")
  CommandApi.DoOnce()

 'Load the data file
  CommandApi.Construct("Import")
  CommandApi.Option("AutoConnect", "False")
  CommandApi.Option ("Path", VoxlerApp.Path+"\Samples\GoldConcentration.dat")
  CommandApi.Option ("Filter", "dat")
  CommandApi.Option ("Options", "Defaults=1;EatWhitespace=1;Delimiter=Space,tab,comma,semicolon;TextQualifier=doublequote,quote")
  CommandApi.Option ("GuiEnabled", "False")
  CommandApi.Do()

 'Add an Exclusion Filter module
  CommandApi.Construct ("CreateModule")
  CommandApi.Option ("Type", "ExclusionFilter")
  CommandApi.Option ("AutoConnect", "True")
  CommandApi.Option ("SourceModule", "GoldConcentration.dat")
  CommandApi.Do()

 'Remove points that are greater than Z= 50
  CommandApi.Construct ("ModifyModule")
  CommandApi.Option ("Module", "ExclusionFilter")
  CommandApi.Option ("ExclusionFilterExpr", "Z>50")
  CommandApi.Do()

 'Attach a scatter plot to the Exclusion filter
  CommandApi.Construct ("CreateModule")
  CommandApi.Option ("Type", "ScatterPlot")
  CommandApi.Option ("AutoConnect", "True")
  CommandApi.Option ("SourceModule", "ExclusionFilter")
  CommandApi.Do()

 'Attach axes to the exclusion filter
  CommandApi.Construct ("CreateModule")
  CommandApi.Option ("Type", "Axes")
  CommandApi.Option ("AutoConnect", "True")
  CommandApi.Option ("SourceModule", "ExclusionFilter")
  CommandApi.Do()

End Sub

 

Updated November 3, 2016

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