Re: [mapserver-users] WMS services from a NetCDF file layer
After determining the data value range (min/max) with gdalinfo -stats for a specific layer, I have now tried both with no satisfactory results... PROCESSING SCALE=AUTO PROCESSING SCALE=313.72549438477:425.49020385742 - Original Message - From: Fabian Schindler fabian.schind...@eox.at To: bhudspeth bhudsp...@edac.unm.edu Cc: mapserver-users@lists.osgeo.org Sent: Tuesday, June 16, 2015 11:50:46 AM Subject: Re: [mapserver-users] WMS services from a NetCDF file layer For the PROCESSING SCALE=low:high option you have to replace the low and high with the respective values (you can use gdalinfo -stats to see what the minimum and maximum values of the image are). Perhaps, you could transform your image on the command line using gdal_translate with the respective -scale option and see what the output is there. Regards, Fabian On 16.06.15 18:01, Bill Hudspeth wrote: Thanks for your suggestion Fabian, I have tried both: PROCESSING SCALE=low:high PROCESSING SCALE=AUTO but with no changewith outputformat set to jpeg, I get a white image, with outputformat set to PNG, I get a very light grey imagebut that is all! Thanks, Bill - Original Message - From: Fabian Schindler fabian.schind...@eox.at To: mapserver-users@lists.osgeo.org Sent: Monday, June 15, 2015 8:47:34 AM Subject: Re: [mapserver-users] WMS services from a NetCDF file layer This is probably due to the fact that your raster values are beyond 255. Mapserver truncates this to 255 which interpreted as white on a greyscale. To correctly scale the values you can use band processing options: PROCESSING SCALE=low:high You can also use AUTO but that might result in strangely tiled images. See: http://mapserver.org/input/raster.html#special-processing-directives Regards, Fabian On 15.06.15 16:04, William Hudspeth wrote: Hello, I am using mapserver to provide WCS and WMS services from individual layers (and their constituent bands) contained in a CF-formatted NetCDF file. I have successfully implemented WCS services, but am continuing to have problems with WMS services. While calls to return a single raster grid (derived from a NetCDF layer) as a WMS request returns a correctly projected image, the image is entirely white, and does not seem to correctly reinterpret original data values into a range of pixel color values. I would appreciate any information on what I might be missing. Thanks! ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] WMS services from a NetCDF file layer
Thanks for your suggestion Fabian, I have tried both: PROCESSING SCALE=low:high PROCESSING SCALE=AUTO but with no changewith outputformat set to jpeg, I get a white image, with outputformat set to PNG, I get a very light grey imagebut that is all! Thanks, Bill - Original Message - From: Fabian Schindler fabian.schind...@eox.at To: mapserver-users@lists.osgeo.org Sent: Monday, June 15, 2015 8:47:34 AM Subject: Re: [mapserver-users] WMS services from a NetCDF file layer This is probably due to the fact that your raster values are beyond 255. Mapserver truncates this to 255 which interpreted as white on a greyscale. To correctly scale the values you can use band processing options: PROCESSING SCALE=low:high You can also use AUTO but that might result in strangely tiled images. See: http://mapserver.org/input/raster.html#special-processing-directives Regards, Fabian On 15.06.15 16:04, William Hudspeth wrote: Hello, I am using mapserver to provide WCS and WMS services from individual layers (and their constituent bands) contained in a CF-formatted NetCDF file. I have successfully implemented WCS services, but am continuing to have problems with WMS services. While calls to return a single raster grid (derived from a NetCDF layer) as a WMS request returns a correctly projected image, the image is entirely white, and does not seem to correctly reinterpret original data values into a range of pixel color values. I would appreciate any information on what I might be missing. Thanks! ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] WMS services from a NetCDF file layer
For the PROCESSING SCALE=low:high option you have to replace the low and high with the respective values (you can use gdalinfo -stats to see what the minimum and maximum values of the image are). Perhaps, you could transform your image on the command line using gdal_translate with the respective -scale option and see what the output is there. Regards, Fabian On 16.06.15 18:01, Bill Hudspeth wrote: Thanks for your suggestion Fabian, I have tried both: PROCESSING SCALE=low:high PROCESSING SCALE=AUTO but with no changewith outputformat set to jpeg, I get a white image, with outputformat set to PNG, I get a very light grey imagebut that is all! Thanks, Bill - Original Message - From: Fabian Schindler fabian.schind...@eox.at To: mapserver-users@lists.osgeo.org Sent: Monday, June 15, 2015 8:47:34 AM Subject: Re: [mapserver-users] WMS services from a NetCDF file layer This is probably due to the fact that your raster values are beyond 255. Mapserver truncates this to 255 which interpreted as white on a greyscale. To correctly scale the values you can use band processing options: PROCESSING SCALE=low:high You can also use AUTO but that might result in strangely tiled images. See: http://mapserver.org/input/raster.html#special-processing-directives Regards, Fabian On 15.06.15 16:04, William Hudspeth wrote: Hello, I am using mapserver to provide WCS and WMS services from individual layers (and their constituent bands) contained in a CF-formatted NetCDF file. I have successfully implemented WCS services, but am continuing to have problems with WMS services. While calls to return a single raster grid (derived from a NetCDF layer) as a WMS request returns a correctly projected image, the image is entirely white, and does not seem to correctly reinterpret original data values into a range of pixel color values. I would appreciate any information on what I might be missing. Thanks! ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
[mapserver-users] WMS services from a NetCDF file layer
Hello, I am using mapserver to provide WCS and WMS services from individual layers (and their constituent bands) contained in a CF-formatted NetCDF file. I have successfully implemented WCS services, but am continuing to have problems with WMS services. While calls to return a single raster grid (derived from a NetCDF layer) as a WMS request returns a correctly projected image, the image is entirely white, and does not seem to correctly reinterpret original data values into a range of pixel color values. I would appreciate any information on what I might be missing. Thanks! -- ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] WMS services from a NetCDF file layer
This is probably due to the fact that your raster values are beyond 255. Mapserver truncates this to 255 which interpreted as white on a greyscale. To correctly scale the values you can use band processing options: PROCESSING SCALE=low:high You can also use AUTO but that might result in strangely tiled images. See: http://mapserver.org/input/raster.html#special-processing-directives Regards, Fabian On 15.06.15 16:04, William Hudspeth wrote: Hello, I am using mapserver to provide WCS and WMS services from individual layers (and their constituent bands) contained in a CF-formatted NetCDF file. I have successfully implemented WCS services, but am continuing to have problems with WMS services. While calls to return a single raster grid (derived from a NetCDF layer) as a WMS request returns a correctly projected image, the image is entirely white, and does not seem to correctly reinterpret original data values into a range of pixel color values. I would appreciate any information on what I might be missing. Thanks! ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
