> Another question, can I convert the background to transparent directly from > Therion. I want import the georeferenced PNG in Google Earth or GIS, and want > only have the cave survey rendered and see the other layers around the cave.
Try ‘colour map-bg transparent’ in your layout. Around pg 54 of the Therion Book. If it is working it should give you a pdf of the cave with a transparent background. I have not tested this recently. When it was first brought in, around version 5.3.5, it had to be placed directly in the export statement in your thconfig, something like; export map -layout-colour map-bg transparent Bruce
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