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I'm looking to specify the file extension of the output file created by running my script from the processing toolbox. Currently, the user must type in the extension in themselves, which I would like to avoid if possible. Ideally, there would be a drop-down, and among the options I would like to have the .pdf extension type.

  • My goal is to increase the usability of the script. It's not a major issue to have the user type in .some extension manually for their file output, but I believe a drop-down would be easier to use than having to type in a file extension each time.

CODE

To create the output option where the user has to choose a path for their output file, I use the following code in the script: 

##PDF_file=output file

This code works as long as the user specifies and manually types in the .pdf extension illustrated below.

Choosing output file location

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If you are using QGIS 2.18 (doesn't work in 2.14, untested in 2.16) you can use:

##PDF_file=output file pdf

enter image description here

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