Jonathan,
Yes, this can be done – I have done it some years ago, so please just take this
carefully.
For serving DEMs in raster form, you are best served through the WCS interface
(in general). This provides back the coverage ( raw) data, instead of rendered
images that you get through WMS (= maps).
I used TIFF as output format, as one of the most common ways to serve
coverages. But there are others, and it depends on the client that you need to
use, and what are the output modalities ( of Geoserver as well, please check).
You must make sure that the data you upload to Geoserver are a proper coverage,
not rendered tifs, of course.
I do not remember anymore the issues we had ( we were using two different WCS,
degree and geoserver I believe, for different purposes). I seem to remember
that one did feed out the integer ( or double, cannot remember) raw height dat
properly, while the other has some issues where we had to do some decoding of
interpreted colour values and I remember figting with big/little endian
encodings or such. NO idea anymore, this may have been an issue with a
different use we had for WCS where we wanted to serve interpreted coloured
coverages with the actual colour values….…
but I am almost sure that the coverages served Geoserver were fine for the DEM.
Cheers,
M.
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