[gdal-dev] Tag for units in GeoTIFF

[Javier Jimenez Shaw]

Hi

Using a GeoTIFF with a single band and float values can be very useful to
show any distribution over the terrain. One typical example is DSM (digital
surface model), where the value is the elevation on every point.

Is there any standard (or accepted) metadata to say the units of those
values?

In the typical case of DSM it is usually "meter" or "foot". But it can be
something else, like "people/km2" for population, or "mm" for rain
precipitation, or "kg/ha" for agricultural yield.

Thanks
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