I have a recurring problem where transparent NaN values (using grdimage) in my postscript AND pdf figures that are produced by GMT get grayed out when imported into certain applications (e.g. Adobe Illustrator). Normally, I circumvent this by avoiding editing them in illustrator, as the transparency works just fine on the PDF. However, I have just recieved the proof of a paper that is about to be published and whatever program they use has this problem and has completely grayed out my bathymetry map, making the figure essentially useless and unpublishable in this form. The correct figure should look like:
The proof’s version looks like:
The output from GMT itself is fine, so I realize the issue is more with the program that is imported the file and how or whether it handles transparency, but I know of many people who have had this issue with GMT output specifically. For example, Illustrator can definitely handle transparency just fine, but not when it’s coming from a pdf made from a postscript file it seems. Is there a way to fix this within our gmt script, a certain output option, other than just a raster image? Any help with this issue is much appreciated. Thanks.