====== Oblique annotations in GMT6's colorbar ======

Since this week, the [[https://generic-mapping-tools.org|Generic mapping tools (GMT)]] have an option to plot colorscale annotations at an angle. After describing my quest to produce annotated geological time scale stages [[https://forum.generic-mapping-tools.org/t/colorbar-and-oblique-annotation/1424|GMT forum post]], Paul swiftly implemented the [[https://github.com/GenericMappingTools/gmt/commit/2ef380ade62724bf6aef0a0ac9ee847b62985596|''-S+a'' option in ''gmt colorbar'']]. This greatly helps with non-numeric colorscales such as the geological time scale.

{{:tectonicwaters:2021:gts-s_a.png?600| Testing the new ''gmt colorbar -S+a'' option}}

{{tag> #GMT #colorbar}}


~~DISCUSSION~~