Hi, everyone. I hope someone can help me with this issue. Last few days. I´ve been struggling with this issue. I want to plot a UTM elevation grid and plot above data in geographic coordinates. I saw this information ( https://docs.generic-mapping-tools.org/dev/gallery/ex28.html ); however, I´m not…

I have been combining UTM data and geographic coordinates data for many years in regular GMT, now called classic mode. I always include the region and projection information in every GMT call, and I have a separate “projUTM” and “projGeog”, with corresponding regions. I am not sure exactly how PyGMT…

One other thing about combining the UTM and geographic projections is that you need to ensure that the regions for the two projections are the same. In classic GMT, you can use the mapproject program to project corner points from geographic to UTM. I have lines like this in many of my old GMT script…

If you want to display geographic coordinates You can use grdproject to transform grid_UTM.tif from UTM coordinates to geographic coordinates. Usually, you’d plot the basemap before the grdimage, so that the grdimage can take the projection and regional extent defined in the basemap. The projection…

Could you show me an example using pygmt?

Reading the manuals normally helps.

Mixing UTM and geographic data sets

Q&A PyGMT Q&A

mdtanker January 30, 2026, 10:54am 7

This answer solved the issue for me! Topography in UTM [m] projection - #3 by mkononets

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Mixing UTM and geographic data sets

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