The Web Coverage Service (WCS) feature is (sort of) working on our installation, now that our sysadmin recompiled --with-wcs.
However, the not-a-number (NaN) values in the floating-point GeoTIFF data files used as input do not seem to be handled correctly. - When the GeoTIFF is a single global dataset, the NaNs are converted to zeroes. I can filter those out of these particular data only because the valid data are all in a range > 0. - More seriously, when there are multiple GeoTIFF files enumerated in a tile index, the NaN areas overwrite data from earlier GeoTIFFs, even though the WMS component handles this properly. For example, this test image was generated via WMS: http://www.map.nasa.gov/test/soar/wms-nans.png The no-data areas are blank and transparent, as desired (the black rectangle has something to do with my attempt to classify the raster data, but is a different problem than the NaN problem). This test image was generated from the WCS output: http://www.map.nasa.gov/test/soar/wcs-nans.png The no-data areas are opaque zeroes that hide valid data from other granules. Thanks for any help, Jeff DLB
