KMZ output through WMS Getmap request contains incorrect coordinates

[mapserver-bot]

Reporter: jmckenna
Date: 2011/06/21 - 23:45
Trac URL: http://trac.osgeo.org/mapserver/ticket/3928

• a small test package (see the README.txt inside the package for commands to use) http://labs.gatewaygeomatics.com/dl/kmz-output.zip
• a WMS GetMap request with format=kmz returns a kmz/kml file with incorrect coordinates
• this seems to only occur with large extents (the test case is a world polygon file)
• example problem request:

http://127.0.0.1/cgi-bin/mapserv.exe?MAP=/ms4w/apps/kmz-output/map/kmz.map&SERVICE=wms&VERSION=1.1.1&LAYERS=continents&REQUEST=GetMap&SRS=EPSG:4326&BBOX=-180,-90,180,90&FORMAT=kmz&WIDTH=400&HEIGHT=300

With shp2img a correct KMZ/KML file is generated, containing coordinates similar to:

          <outerBoundaryIs>
            <LinearRing>
              <coordinates>
    -60.39371490,46.38618469
    -60.38736343,46.39370728
    -60.38272476,46.39415359
    -60.38175583,46.39162827
    -60.39077759,46.38159561
    -60.39371490,46.38618469
    </coordinates>
            </LinearRing>
          </outerBoundaryIs>

..but the WMS GetMap request generates a KMZ/KML with coordinates similar to:

          <outerBoundaryIs>
            <LinearRing>
              <coordinates>
    132.89587233,227.31030782
    132.90292952,227.32284546
    132.90808360,227.32358932
    132.90916019,227.31938044
    132.89913601,227.30265935
    132.89587233,227.31030782
    </coordinates>
            </LinearRing>
          </outerBoundaryIs>

[mapserver-bot]

Author: jmckenna
Date: 2011/06/22 - 14:16
changing component to 'Output-KML'

[mapserver-bot]

Author: assefa
Date: 2011/07/06 - 20:00
This is happening for non-square requests (where ratio w/h is different from ratio x/y)

I was expecting the MS_NONSQUARE [yes|no] setting in the map file to turn on/off but from what I can see WMS will always turn it ON if It needs to. I entered a bug on it (#3949). Fixing that bug should be able to allow this kml driver to automatically disallow wms non-square requests and fix this issue.

[mapserver-bot]

This is an automated comment

This issue has been closed due to lack of activity. This doesn't mean the issue is invalid, it simply got no attention within the last year. Please reopen with missing/relevant information if still valid.

Typically, issues fall in this state for one of the following reasons:

• Hard, impossible or not enough information to reproduce
• Missing test case
• Lack of a champion with interest and/or funding to address the issue

[jmckenna]

updated test package link (contents is exact same as in 2011): http://gatewaygeomatics.com/dl/kmz-output.zip