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4.4. Making Blank Images Sometimes it may be useful to create a blank image (placeholder) from a Python script. Utility Petronode.BlankImage.exe. Creates a blank image in defined format. The following formats are supported: png, tiff, jpg, bmp, emf, gif, wmf. Command line application: Blank_Image.exe output_file X Y     output_file - file to write to. It exists, the file is overwritten.     X - number of pixels, image width.     Y - number of pixels, image height. The following Python script evokes the Blank_Image.exe (can be used inside or outside Techlog) # # Example 12 - creating a blank graphics file # import os import subprocess # # location of Petronode install folder # cBatchProcessorFolder = "C:\\Program Files\\Petronode" # # Makes blank image in workfolder, with name output, size (X x Y) # def Make_Blank_Image ( workfolder, output, X, Y):     Params = [os.path.join( cBatchProcessorFolder, "Petronode.BlankImage.exe")]     Params += [ os.path.join( workfolder, output)]     Params += [ str(X)]     Params += [ str(Y)]     return subprocess.call( Params) Make_Blank_Image( ".", "Test.gif", 100, 100) |
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