Feature #907

grdgradient - Hillshade from several angles

Added by Andreas 12 months ago. Updated 12 months ago.

Status:NewStart date:2016-05-16
Priority:NormalDue date:
Assignee:-% Done:


Target version:-


1) The new -Em option in grdgradient is not documented on the grdgradient man page.
From the cookbook:
"grdgradient now has -Em that gives results close to ESRI’s "hillshade" (but faster)."

2)Being able to make a multi-directional hillshade can make a map easy to read and very comfortable to look at. See https://blogs.esri.com/esri/arcgis/2014/07/14/introducing-esris-next-generation-hillshade/. I also posted about this in the forum some time ago; http://gmt.soest.hawaii.edu/boards/1/topics/1041. This would be a great feature.


#1 Updated by Joaquim 12 months ago

That option probably never got documented because AFAIK (I did already some long time ago) it worked well in some cases but others were requiring a scaling factor for the shading effect do it's job.
Anyway, it was not that multiple directions shading that you pointed us to.

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