[mapserver-users] WCS 1.0 vs 1.1 image shifted

[Roger André]

Hi Ben,

I think it's a bug, at least based on the conversation that took place last
year with Steve Lime regarding this -
http://www.mail-archive.com/mapserver-users@lists.osgeo.org/msg06123.html

I'm not sure what the current state is of this though.

Roger
--

On Fri, Apr 30, 2010 at 1:18 PM, Ben Tuttle <benjamin.tuttle at gmail.com>wrote:

> I am trying to understand the results I am getting from WCS requests
> to MapServer.
> If I make the same request changing only the WCS version the images I
> get back are shifted by 1 pixel in the x and y directions. A request
> for VERSION=1.1.0 gives me the image I expect while VERSION=1.0.0
> gives me back an image shifted by 1 pixel in the x and y directions to
> the North and West.
> The underlying data and mapfile are the same in both cases. So I am
> not sure if this is perhaps a MapServer bug or if perhaps I am reading
> the WCS spec incorrectly and this is actually the intended result (I
> hope it's not). Can anyone help me out?
>
> Request Examples:
>
> http://map.ngdc.noaa.gov/cgi-bin/mapserver/test_image_ms_wcs100_avgvis42_23_47_28.tif?map=../../../nfs/gisdata/mapserver/gcv4/index.map&request=GetCoverage&service=WCS&COVERAGE=F162008_v4_avg_vis&crs=EPSG:4326&VERSION=1.0.0&format=geotiff&resx=0.0083333333&resy=0.0083333333&bbox=42,23,47,28
>
>
> http://map.ngdc.noaa.gov/cgi-bin/mapserver/test_image_ms_wcs110_avgvis42_23_47_28.tif?map=../../../nfs/gisdata/mapserver/gcv4/index.map&request=GetCoverage&service=WCS&COVERAGE=F162008_v4_avg_vis&crs=EPSG:4326&VERSION=1.1.0&format=geotiff&resx=0.0083333333&resy=0.0083333333&bbox=42,23,47,28
>
>
> System Details:
> MapServer version 5.6.3 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG OUTPUT=WBMP
> OUTPUT=SVG SUPPORTS=PROJ SUPPORTS=AGG SUPPORTS=FREETYPE SUPPORTS=ICONV
> SUPPORTS=WMS_SERVER SUPPORTS=WMS_CLIENT SUPPORTS=WFS_SERVER
> SUPPORTS=WFS_CLIENT SUPPORTS=WCS_SERVER SUPPORTS=SOS_SERVER
> SUPPORTS=THREADS SUPPORTS=GEOS INPUT=TIFF INPUT=EPPL7 INPUT=POSTGIS
> INPUT=ORACLESPATIAL INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE
>
> Red Hat Enterprise Linux Server release 5.5 (Tikanga)
>
> --
> Cheers, Ben Tuttle
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>
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