Thanks for the trick Jeff, unfortunatelly i still get a 8-bits png and obviously uint16 is not a valid mapserver imagemode... Johannes
Le mer. 5 févr. 2020 à 16:52, Jeff McKenna <jmcke...@gatewaygeomatics.com> a écrit : > Hi Johannes, > > I just wanted to mention that what I always test OUTPUTFORMAT with is > through the shp2img commandline utility, with the "-i" switch, such as: > > shp2img -m test.map -o ttt.png -i PNG16 -all_debug 5 > > PS. in the future MapServer v8.0 I hope to help change that utility name > to "map2img", so it makes more sense. > > > -jeff > > > > -- > Jeff McKenna > MapServer Consulting and Training Services > https://gatewaygeomatics.com/ > > > > > On 2020-02-05 6:02 a.m., Johannes Paul wrote: > > Hello, > > I'm using Mapserver to output PNG 16-bits DEM raster from .HGT elevation > > data. > > I'm using the below output format definition : > > > > |OUTPUTFORMAT NAME PNG16 DRIVER GDAL/PNG MIMETYPE image/png IMAGEMODE > > INT16 EXTENSION "png" END| > > > > However I keep on getting the standard PNG 8-bits out of mapserver. > > > > The strange thing being that when I use a similar config to get GeoTiff > > 16-bits, I do get what I'm asking for : > > > > OUTPUTFORMAT > > NAME GEOTIFF16 > > DRIVER GDAL/GTiff > > MIMETYPE image/tiff > > IMAGEMODE INT16 > > EXTENSION "tiff" > > END > > > > > > Could that be an issue with the GDAL/PNG driver ? It seems that the > > GDAL/PNG driver supports only CreateCopy() and not Create(), where the > > GDAL/GTiff driver supports both ... Could that be it ? I suspect the > > GDAL/PNG driver so I also sent my issue to the GDAL mailing list. > > > > I can see from the mailing list that other users already had a similar > > issue, but there is no obvious reason or solution provided. > > https://lists.osgeo.org/pipermail/mapserver-users/2011-April/068428.html > > > https://lists.osgeo.org/pipermail/mapserver-users/2012-January/071310.html > > > > For information, I'm using GDAL v2.1.3 and Mapserver v7.0.1 > > Thanks, > > Johannes > > > > > > > _______________________________________________ > mapserver-users mailing list > mapserver-users@lists.osgeo.org > https://lists.osgeo.org/mailman/listinfo/mapserver-users
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