[gdal-dev] Hints that a raster band represents a DEM?

[Matt.Wilkie at yukon.ca]

If you decide to add an elevation metadata keyword for things you generate let us know and I at least will follow suit. ;-)

-Matt

-----Original Message-----
From: gdal-dev <gdal-dev-bounces at lists.osgeo.org> On Behalf Of Nyall Dawson
Sent: April 29, 2022 6:11 PM
To: gdal dev <gdal-dev at lists.osgeo.org>
Subject: [gdal-dev] Hints that a raster band represents a DEM?

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Hi list,

I'm looking for any tips on potential approaches I could use to automagically guess that a particular band from a data source represents an elevation surface.

I haven't been able to find any common metadata components in the files I've investigated which could help indicate this, but maybe I'm missing something. Right now the best approach I can think of would be to test if the layer's CRS has a vertical component (but unfortunately even among DEM layers I think this will be rare!).

Any suggestions?
Nyall
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