[mapserver-dev] Raster fliped with WMS and reprojection
even.rouault at mines-paris.org
Thu Jun 12 11:28:43 PDT 2014
Le jeudi 12 juin 2014 14:12:58, Yves Jacolin a écrit :
> I have a raster file in GeoTiff, EPSG:4326. I am using it in a mapfile for
> WMS services in EPSG:3857.
> When zooming out I get the raster layer flipped. All other vector layer are
> ok. It seems that it occurs when the BBOX is outside the EPSG:3857
> projected bounds limitation .
> I have another issue which may not be linked with the previous one: a
> vertical blank line appear on the left (beyon 180 degrees). However, the
> raster is showing again after the date line.
> Here two requests, the first one shows the wrong result:
> The second one shows the good result:
> - WIDTH=1503
> + WIDTH=1502
> This MapServer is quiet old but I can reproduce the issue with master.
> If I open the raster file directly in QGIS I have some other rendering
> issue (some part of the raster are not displayed at all, but always
> different part among the zoom level (always on the left anyway).
I guess those artifacts are encountered with on-the-fly reprojection turned on
? QGIS must have similar issues as MapServer with discontinuities at date-line
> Log in MapServer doesn't seems to show any error.
> Any idea? Should I fill a ticket with this?
Could be usefull with .map, associated input data and requests.
>  http://epsg.io/3857
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