WCS default band ?

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WCS default band ?

Rousseau Lambert2, Louis-Philippe (EC)

Hi !


I'm configuring a WCS web services with files that have many bands, like 150.


The layer is only available in WCS and I would like to be able to specify a default band to use. I tried the WMS way with the PROCESSING "BANDS=1" but if I ask for the layer with a WCS 2.0.1 request, all always get all the bands...


Here is the request I use:

localhost:8080/mapserv?map=/some/path/wcs.map&SERVICE=WCS&VERSION=2.0.1&REQUEST=GetCoverage&COVERAGEID=layer_name&FORMAT=image/tiff&SUBSET=x(-160,-45)&SUBSET=y(25,85)


the result (from a 3 band layer) is always a 3 bands layer unless I specify a band to use in my WCS request. I would like it to only give a default band when I don't specify the RANGESUBSET...


Any idea on how to do, or I am doing something wrong ?


Thanks guys!


LP


Example mapfile:


MAP
 NAME "test"
 PROJECTION
  "init=epsg:4326"
 END
 OUTPUTFORMAT
  NAME GEOTIFF_16
  DRIVER "GDAL/GTiff"
  MIMETYPE "image/tiff"
  IMAGEMODE FLOAT32
  EXTENSION "tif"
 END
 EXTENT -180 -90 180 90
 SIZE 500 300
 WEB
  METADATA
    "ows_enable_request" "*"
    "ows_title" "My Web Services"
    "wcs_label" "test for cccs"
  END
 END

LAYER
     NAME "layer_name"
     STATUS ON
     TYPE RASTER
     DUMP TRUE
     TEMPLATE "ttt.html"
PROJECTION
 "init=epsg:4326"
 "lon_wrap=180"
END
     DATA '/data/geomet/afsslor/cccs/cmip5/test.tif'
     PROCESSING "BANDS=1"
     METADATA
      "ows_title" "test"
      "ows_include_items" "all"
      "wms_enable_request" "!*"
      "wcs_enable_request" "*"
      "wcs_label" "test for cccs"
      "wcs_size" "360 180"
      "wcs_extent" "-180 -90 180 90"
      "wcs_imagemode" "FLOAT32"
      "wcs_bandcount" "3"
      "wcs_band_names" "BandA BandB BandC"
      #default values
      "wcs_band_interpretation"   "This is default interpretation"
      "wcs_band_uom"              "DefaultUOM"
      "wcs_band_definition"       "DefaultDefinition"
      "wcs_band_description"      "This is default description"
      "wcs_interval"              "195 310"
      "wcs_significant_figures"   "3"
     END
    END
END


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Re: WCS default band ?

Stephan Meißl
Hi, I don't think that this is possible, neither in MapServer nor in
WCS. I'd recommend to pre-process the files to only contain the needed
bands. cu Stephan


On 06/14/2018 05:12 PM, Rousseau Lambert2, Louis-Philippe (EC) wrote:

> Hi !
>
>
> I'm configuring a WCS web services with files that have many bands, like
> 150.
>
>
> The layer is only available in WCS and I would like to be able to
> specify a default band to use. I tried the WMS way with the PROCESSING
> "BANDS=1" but if I ask for the layer with a WCS 2.0.1 request, all
> always get all the bands...
>
>
> Here is the request I use:
>
> localhost:8080/mapserv?map=/some/path/wcs.map&SERVICE=WCS&VERSION=2.0.1&REQUEST=GetCoverage&COVERAGEID=layer_name&FORMAT=image/tiff&SUBSET=x(-160,-45)&SUBSET=y(25,85)
>
>
> the result (from a 3 band layer) is always a 3 bands layer unless I
> specify a band to use in my WCS request. I would like it to only give a
> default band when I don't specify the RANGESUBSET...
>
>
> Any idea on how to do, or I am doing something wrong ?
>
>
> Thanks guys!
>
>
> LP
>
>
> Example mapfile:
>
>
> MAP
>  NAME "test"
>  PROJECTION
>   "init=epsg:4326"
>  END
>  OUTPUTFORMAT
>   NAME GEOTIFF_16
>   DRIVER "GDAL/GTiff"
>   MIMETYPE "image/tiff"
>   IMAGEMODE FLOAT32
>   EXTENSION "tif"
>  END
>  EXTENT -180 -90 180 90
>  SIZE 500 300
>  WEB
>   METADATA
>     "ows_enable_request" "*"
>     "ows_title" "My Web Services"
>     "wcs_label" "test for cccs"
>   END
>  END
>
> LAYER
>      NAME "layer_name"
>      STATUS ON
>      TYPE RASTER
>      DUMP TRUE
>      TEMPLATE "ttt.html"
> PROJECTION
>  "init=epsg:4326"
>  "lon_wrap=180"
> END
>      DATA '/data/geomet/afsslor/cccs/cmip5/test.tif'
>      PROCESSING "BANDS=1"
>      METADATA
>       "ows_title" "test"
>       "ows_include_items" "all"
>       "wms_enable_request" "!*"
>       "wcs_enable_request" "*"
>       "wcs_label" "test for cccs"
>       "wcs_size" "360 180"
>       "wcs_extent" "-180 -90 180 90"
>       "wcs_imagemode" "FLOAT32"
>       "wcs_bandcount" "3"
>       "wcs_band_names" "BandA BandB BandC"
>       #default values
>       "wcs_band_interpretation"   "This is default interpretation"
>       "wcs_band_uom"              "DefaultUOM"
>       "wcs_band_definition"       "DefaultDefinition"
>       "wcs_band_description"      "This is default description"
>       "wcs_interval"              "195 310"
>       "wcs_significant_figures"   "3"
>      END
>     END
> END
>
>
>
> _______________________________________________
> mapserver-users mailing list
> [hidden email]
> https://lists.osgeo.org/mailman/listinfo/mapserver-users
>


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