Re: [MapServer-users] mapserver: styling multiple stop colorrange for raster data
Yeah I also saw that. So I guess value_ should do it. I'm working with netcdf so I wondered if that has something to do with it. So I tried with a geotiff. Also not working. Then I updated my mapserver to 8.0.1 from 7.4 something, and now I get the expected style for both geotiff and netcdf. So version do matter! Thank you for your patience Seth! Trygve Aspenes Den 2023-08-28 16:07, skrev Seth G: A good question and it doesn't seem to be clearly documented. I've always tried values listed at https://mapserver.org/el/input/raster.html#raster-query even though that section appears to be written for MapScript. Each band has a value based on index, so you should get results using "value_0", "value_1", and "value_2" in RANGEITEM. gdalinfo should peobably provide details on the value ranges in each band. Seth -- web:https://geographika.net & https://mapserverstudio.net twitter: @geographika On Mon, Aug 28, 2023, at 2:50 PM, Trygve Aspenes via MapServer-users wrote: Thanks Seth for your quick reply Yes I have multiple bands. gdalinfo tells me I have bands like this: Band 1 Block=949x1069 Type=Float32, ColorInterp=Undefined Band 2 Block=949x1069 Type=Float32, ColorInterp=Undefined Band 3 Block=949x1069 Type=Float32, ColorInterp=Undefined . . . Band n Block=949x1069 Type=Float32, ColorInterp=Undefined So, how could I figure out how the various bands are named in mapserver for the RANGEITEM? I have looked at the documentation for STYLE/RANGEITEM but I still don't get it. I have tried various values for RANGEITEM ( like "value_0", "0", "1", "pixel", "Band 1" etc), but I dont get it. It must be something that I'm missing. By the way, thanks for the mapserverstudio link. Most helpful! Trygve Aspenes Den 2023-08-28 13:14, skrev Seth G: Hi Trygve, You can have multiple start/stop values and your syntax looks correct. Maybe you have multiple bands in your raster and you are symbolising on the incorrect value? Try explicitly setting the RANGEITEM. See working example at https://app.mapserverstudio.net/#9JBVADFh CLASS NAME "colorramp" STYLE COLORRANGE "#e3edfc" "#287593" # a color gradient from light grey to a shade of blue # a pixel value of -20 will be light grey, and values from -20 to 0 will be # assigned a color from the colour gradient of light grey to blue DATARANGE -20 0 RANGEITEM "value_0" # this is the name of the value band in the raster, the datasets used in the Mapfile have a single band END STYLE COLORRANGE "#29497b" "#759387" DATARANGE 0 20 RANGEITEM "value_0" END STYLE COLORRANGE "#bfa96d" "#480d26" DATARANGE 20 50 RANGEITEM "value_0" END END Seth -- web:https://geographika.net & https://mapserverstudio.net twitter: @geographika On Mon, Aug 28, 2023, at 12:06 PM, Trygve Aspenes via MapServer-users wrote: Hi all I'm looking into creating a styling for a raster of float32 data. The data describes temperature in kelvin and I want to have a colorrange from blue to white for data up to 273 deg kelvin(0 deg C). And from white to red for warmer data. I see here https://mapserver.org/output/kerneldensity.html#raster-color-ramping how this is used for heatmap hoping that this will work for a raster also. I try with something like this: CLASS STYLE COLORRANGE "#" "#" DATARANGE 200 273 END # STYLE STYLE COLORRANGE "#" "#ffff" DATARANGE 273 315 END # STYLE END # CLASS but as far as I can see this gives me only white. If I try to use one style like this: CLASS STYLE COLORRANGE "#" "#ffff" DATARANGE 200 315 END # STYLE END # CLASS it works but the color range goes directly from red to blue. Am I doing something wrong or can I not use multiple stops for these kind of data? Trygve Aspenes ___ MapServer-users mailing list MapServer-users@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/mapserver-users ___ MapServer-users mailing list MapServer-users@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/mapserver-users ___ MapServer-users mailing list MapServer-users@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [MapServer-users] mapserver: styling multiple stop colorrange for raster data
A good question and it doesn't seem to be clearly documented. I've always tried values listed at https://mapserver.org/el/input/raster.html#raster-query even though that section appears to be written for MapScript. Each band has a value based on index, so you should get results using "value_0", "value_1", and "value_2" in RANGEITEM. gdalinfo should peobably provide details on the value ranges in each band. Seth -- web:https://geographika.net & https://mapserverstudio.net twitter: @geographika On Mon, Aug 28, 2023, at 2:50 PM, Trygve Aspenes via MapServer-users wrote: > Thanks Seth for your quick reply > > Yes I have multiple bands. gdalinfo tells me I have bands like this: > Band 1 Block=949x1069 Type=Float32, ColorInterp=Undefined > Band 2 Block=949x1069 Type=Float32, ColorInterp=Undefined > Band 3 Block=949x1069 Type=Float32, ColorInterp=Undefined > . > . > . > Band n Block=949x1069 Type=Float32, ColorInterp=Undefined > > So, how could I figure out how the various bands are named in mapserver > for the RANGEITEM? > > I have looked at the documentation for STYLE/RANGEITEM but I still don't > get it. > > I have tried various values for RANGEITEM ( like "value_0", "0", "1", > "pixel", "Band 1" etc), but I dont get it. > > It must be something that I'm missing. > > By the way, thanks for the mapserverstudio link. Most helpful! > Trygve Aspenes > > > Den 2023-08-28 13:14, skrev Seth G: >> Hi Trygve, >> >> You can have multiple start/stop values and your syntax looks correct. >> Maybe you have multiple bands in your raster and you are symbolising on >> the incorrect value? Try explicitly setting the RANGEITEM. >> >> See working example at https://app.mapserverstudio.net/#9JBVADFh >> >> CLASS >> NAME "colorramp" >> STYLE >> COLORRANGE "#e3edfc" "#287593" # a color gradient from >> light grey to a shade of blue >> # a pixel value of -20 will be light grey, and values >> from -20 to 0 will be >> # assigned a color from the colour gradient of light >> grey to blue >> DATARANGE -20 0 >> RANGEITEM "value_0" # this is the name of the value >> band in the raster, the datasets used in the Mapfile have a single band >> END >> STYLE >> COLORRANGE "#29497b" "#759387" >> DATARANGE 0 20 >> RANGEITEM "value_0" >> END >> STYLE >> COLORRANGE "#bfa96d" "#480d26" >> DATARANGE 20 50 >> RANGEITEM "value_0" >> END >> END >> >> Seth >> >> >> -- >> web:https://geographika.net & https://mapserverstudio.net >> twitter: @geographika >> >> On Mon, Aug 28, 2023, at 12:06 PM, Trygve Aspenes via MapServer-users >> wrote: >>> Hi all >>> >>> I'm looking into creating a styling for a raster of float32 data. >>> The data describes temperature in kelvin and I want to have a >>> colorrange >>> from blue to white for data up to 273 deg kelvin(0 deg C). And from >>> white to red for warmer data. >>> >>> I see here >>> https://mapserver.org/output/kerneldensity.html#raster-color-ramping >>> how >>> this is used for heatmap hoping that this will work for a raster also. >>> >>> I try with something like this: >>> >>> CLASS >>>STYLE >>> COLORRANGE "#" "#" >>> DATARANGE 200 273 >>>END # STYLE >>>STYLE >>> COLORRANGE "#" "#ffff" >>> DATARANGE 273 315 >>>END # STYLE >>> END # CLASS >>> >>> but as far as I can see this gives me only white. >>> >>> If I try to use one style like this: >>> >>> CLASS >>>STYLE >>> COLORRANGE "#" "#ffff" >>> DATARANGE 200 315 >>>END # STYLE >>> END # CLASS >>> >>> it works but the color range goes directly from red to blue. >>> >>> Am I doing something wrong or can I not use multiple stops for these >>> kind of data? >>> >>> Trygve Aspenes >>> ___ >>> MapServer-users mailing list >>> MapServer-users@lists.osgeo.org >>> https://lists.osgeo.org/mailman/listinfo/mapserver-users > ___ > MapServer-users mailing list > MapServer-users@lists.osgeo.org > https://lists.osgeo.org/mailman/listinfo/mapserver-users ___ MapServer-users mailing list MapServer-users@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [MapServer-users] mapserver: styling multiple stop colorrange for raster data
Thanks Seth for your quick reply Yes I have multiple bands. gdalinfo tells me I have bands like this: Band 1 Block=949x1069 Type=Float32, ColorInterp=Undefined Band 2 Block=949x1069 Type=Float32, ColorInterp=Undefined Band 3 Block=949x1069 Type=Float32, ColorInterp=Undefined . . . Band n Block=949x1069 Type=Float32, ColorInterp=Undefined So, how could I figure out how the various bands are named in mapserver for the RANGEITEM? I have looked at the documentation for STYLE/RANGEITEM but I still don't get it. I have tried various values for RANGEITEM ( like "value_0", "0", "1", "pixel", "Band 1" etc), but I dont get it. It must be something that I'm missing. By the way, thanks for the mapserverstudio link. Most helpful! Trygve Aspenes Den 2023-08-28 13:14, skrev Seth G: Hi Trygve, You can have multiple start/stop values and your syntax looks correct. Maybe you have multiple bands in your raster and you are symbolising on the incorrect value? Try explicitly setting the RANGEITEM. See working example at https://app.mapserverstudio.net/#9JBVADFh CLASS NAME "colorramp" STYLE COLORRANGE "#e3edfc" "#287593" # a color gradient from light grey to a shade of blue # a pixel value of -20 will be light grey, and values from -20 to 0 will be # assigned a color from the colour gradient of light grey to blue DATARANGE -20 0 RANGEITEM "value_0" # this is the name of the value band in the raster, the datasets used in the Mapfile have a single band END STYLE COLORRANGE "#29497b" "#759387" DATARANGE 0 20 RANGEITEM "value_0" END STYLE COLORRANGE "#bfa96d" "#480d26" DATARANGE 20 50 RANGEITEM "value_0" END END Seth -- web:https://geographika.net & https://mapserverstudio.net twitter: @geographika On Mon, Aug 28, 2023, at 12:06 PM, Trygve Aspenes via MapServer-users wrote: Hi all I'm looking into creating a styling for a raster of float32 data. The data describes temperature in kelvin and I want to have a colorrange from blue to white for data up to 273 deg kelvin(0 deg C). And from white to red for warmer data. I see here https://mapserver.org/output/kerneldensity.html#raster-color-ramping how this is used for heatmap hoping that this will work for a raster also. I try with something like this: CLASS STYLE COLORRANGE "#" "#" DATARANGE 200 273 END # STYLE STYLE COLORRANGE "#" "#ffff" DATARANGE 273 315 END # STYLE END # CLASS but as far as I can see this gives me only white. If I try to use one style like this: CLASS STYLE COLORRANGE "#" "#ffff" DATARANGE 200 315 END # STYLE END # CLASS it works but the color range goes directly from red to blue. Am I doing something wrong or can I not use multiple stops for these kind of data? Trygve Aspenes ___ MapServer-users mailing list MapServer-users@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/mapserver-users ___ MapServer-users mailing list MapServer-users@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [MapServer-users] mapserver: styling multiple stop colorrange for raster data
Hi Trygve, You can have multiple start/stop values and your syntax looks correct. Maybe you have multiple bands in your raster and you are symbolising on the incorrect value? Try explicitly setting the RANGEITEM. See working example at https://app.mapserverstudio.net/#9JBVADFh CLASS NAME "colorramp" STYLE COLORRANGE "#e3edfc" "#287593" # a color gradient from light grey to a shade of blue # a pixel value of -20 will be light grey, and values from -20 to 0 will be # assigned a color from the colour gradient of light grey to blue DATARANGE -20 0 RANGEITEM "value_0" # this is the name of the value band in the raster, the datasets used in the Mapfile have a single band END STYLE COLORRANGE "#29497b" "#759387" DATARANGE 0 20 RANGEITEM "value_0" END STYLE COLORRANGE "#bfa96d" "#480d26" DATARANGE 20 50 RANGEITEM "value_0" END END Seth -- web:https://geographika.net & https://mapserverstudio.net twitter: @geographika On Mon, Aug 28, 2023, at 12:06 PM, Trygve Aspenes via MapServer-users wrote: > Hi all > > I'm looking into creating a styling for a raster of float32 data. > The data describes temperature in kelvin and I want to have a colorrange > from blue to white for data up to 273 deg kelvin(0 deg C). And from > white to red for warmer data. > > I see here > https://mapserver.org/output/kerneldensity.html#raster-color-ramping how > this is used for heatmap hoping that this will work for a raster also. > > I try with something like this: > > CLASS >STYLE > COLORRANGE "#" "#" > DATARANGE 200 273 >END # STYLE >STYLE > COLORRANGE "#" "#ffff" > DATARANGE 273 315 >END # STYLE > END # CLASS > > but as far as I can see this gives me only white. > > If I try to use one style like this: > > CLASS >STYLE > COLORRANGE "#" "#ffff" > DATARANGE 200 315 >END # STYLE > END # CLASS > > it works but the color range goes directly from red to blue. > > Am I doing something wrong or can I not use multiple stops for these > kind of data? > > Trygve Aspenes > ___ > MapServer-users mailing list > MapServer-users@lists.osgeo.org > https://lists.osgeo.org/mailman/listinfo/mapserver-users ___ MapServer-users mailing list MapServer-users@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/mapserver-users
[MapServer-users] mapserver: styling multiple stop colorrange for raster data
Hi all I'm looking into creating a styling for a raster of float32 data. The data describes temperature in kelvin and I want to have a colorrange from blue to white for data up to 273 deg kelvin(0 deg C). And from white to red for warmer data. I see here https://mapserver.org/output/kerneldensity.html#raster-color-ramping how this is used for heatmap hoping that this will work for a raster also. I try with something like this: CLASS STYLE COLORRANGE "#" "#" DATARANGE 200 273 END # STYLE STYLE COLORRANGE "#" "#ffff" DATARANGE 273 315 END # STYLE END # CLASS but as far as I can see this gives me only white. If I try to use one style like this: CLASS STYLE COLORRANGE "#" "#ffff" DATARANGE 200 315 END # STYLE END # CLASS it works but the color range goes directly from red to blue. Am I doing something wrong or can I not use multiple stops for these kind of data? Trygve Aspenes ___ MapServer-users mailing list MapServer-users@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/mapserver-users
