Mapserver-4.4.0-beta2 wms client rendering problem

Frank Warmerdam warmerdam at POBOX.COM
Wed Nov 10 09:17:02 EST 2004


Lars Holm Loldrup wrote:
> Rendering a wms client layer, the image is slight distorted, and shifted
> 1 pixel north-west - se the attached images: 1.png is the original from
> the wms-server, and 2.png is the resulting image that mapserver
> generates.
>
> Observerd on my own win32 build & on the win32 version from
> http://dl.maptools.org/dl/

Lars,

OK, I see the resulting problem.  Can you file a bug (and have it assigned
to me) that shows the steps to reproduce this?  Ideally a mapfile with just
the WMS layer, and a mapserv request that will generate the slightly offset
result.

I *suspect* that the world file attached internally to images fetched from
remote WMS'es is off by half a pixel and this is causing a sampling error
or offset.

> BTW. The true color bug
> http://mapserver.gis.umn.edu/bugs/show_bug.cgi?id=468
> seems to be resolved in beta2.

OK, I have close it now.

Best regards,
--
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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and watch the world go round - Rush    | Geospatial Programmer for Rent



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