Hi, I'm a newbie to GeoServer, and I'm trying to find out how to use elevation data with GeoServer. I downloaded SRTM data version 2.1 from here: http://dds.cr.usgs.gov/srtm/version2_1/ , which brings in a lot of .hgt files, some in 1 arc degree resolution, some in 3, some in 30 arc degree resolutions.
The files that come with are of the extension .hgt, and some documentation is provided, saying that these are big-endian height matrix files, with 16 bits values, and 1201 x 1201 in size for the 3 arc sec resolution files, and 3601 x 3601 for the 1 arc sec resolution files. My questions are: 1. how can I make GeoServer use these files as raster data sources? I looked at the GeoServer documentation and did some online search as well, but it is not clear to me if these files fall into any of the supported raster data source categories: ArcGrid - Arc Grid Coverage Format GeoTIFF - Tagged Image File Format with Geographic information Gtopo30 - Gtopo30 Coverage Format ImageMosaic - Image mosaicking plugin WorldImage - A raster file accompanied by a spatial data file and neither the image formats listed in the GDAL image format documentation page http://docs.geoserver.org/stable/en/user/data/gdal.html . athough gdal itself seems to support the SRTM HGT format: http://www.gdal.org/frmt_various.html#SRTMHGT thus, how would I make GeoServer use these files as elevation raster files? should one convert SRTM HGT files using gdal into some other format first, and then make GeoServer use some alternative format? 2. moreover, when trying to set up any of these categories, it seems that one has to specify one file at at time - which is very tedious, as there are literally hundreds of files. how could one specify a directory, and have GeoServer load each file from there? (or maybe even a recursive search?) 3. where would I specify the coverage of each file? it comes from the files naming convention (say N33E074.hgt), but I didn't find a way to specify the files coverage in the new data source dialog for any of the above raster formats 4. once configured into GeoServer, what would be the easiest way to verify that the files are correct? (is there a very simple viewer that would show them say in a color-coded form?) 5. maybe I'm missing something, and there is a better source of elevation data available than SRTM? Akos ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ Geoserver-users mailing list Geoserver-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geoserver-users
