[mapserver-dev] Raster fliped with WMS and reprojection

[Even Rouault]

Le jeudi 12 juin 2014 14:27:30, Yves Jacolin a écrit :
> Again,
> 
> About vertical blank line, one should add this line in the layer object
> (this is not in the doc):
> 
> PROCESSING "LOAD_WHOLE_IMAGE=YES"
> 
> See https://github.com/mapserver/mapserver/issues/3111

Actually, I can see it being mentionned in 
http://mapserver.org/input/raster.html .

> 
> Y.
> 
> 2014-06-12 14:12 GMT+02:00 Yves Jacolin <yves.jacolin at camptocamp.com>:
> > Hello,
> > 
> > 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 [1].
> > 
> > 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:
> > *
> > http://www.ifremer.fr/services/wms1?LAYERS=ETOPO1_BATHY_R&STYLES=default&
> > FORMAT=image%2Fpng&TRANSPARENT=TRUE&SERVICE=WMS&VERSION=1.1.1&REQUEST=Get
> > Map&SRS=EPSG%3A3857&BBOX=-28066452.007098,-2465552.6274048,30754589.24669
> > 9,9979617.7775904&WIDTH=1503&HEIGHT=400
> > 
> > The second one shows the good result:
> > *
> > http://www.ifremer.fr/services/wms1?LAYERS=ETOPO1_BATHY_R&STYLES=default&
> > FORMAT=image%2Fpng&TRANSPARENT=TRUE&SERVICE=WMS&VERSION=1.1.1&REQUEST=Get
> > Map&SRS=EPSG%3A3857&BBOX=-28066452.007098,-2465552.6274048,30754589.24669
> > 9,9979617.7775904&WIDTH=1502&HEIGHT=400
> > 
> > Diff:
> > - 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).
> > 
> > Log in MapServer doesn't seems to show any error.
> > 
> > Any idea? Should I fill a ticket with this?
> > 
> > Thanks,
> > 
> > Y.
> > [1] http://epsg.io/3857
> > --
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