Pierre-Benoit,
Unfortunately for you, MapServer has no automated way to deal with
wrapping coordinates at the date line. If all your data is in the
[-180,180] range and you request a map for the [180,270] range then
MapServer doesn't find anything to render and returns a blank map.
You could possibly make a copy of all your data in the [180,540] range
by adding +360 to all longitude values. I don't know of any tool that
does that out of the box, but it should be easy to modify ogr2ogr to do
that for you if you are fluent in C/C++.
Another option might be to look at modifying the MapFish scripts to
handle the wrapping of coordinates at the +/-180 line and request maps
from MapServer with the correct extents.
Finally, we could possibly try to handle the wrapping in MapServer...
you could file a enhancement ticket about that. The addition sounds
simple at first, but I fear that it may be more involved than it seems.
Daniel
Pierre-Benoit Besse wrote:
Isn't there anyone to help me with this ?
2008/8/4 Faldor <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>
Hi all,
I use Mapserver with mapfish for the client side to display
shapefiles which
I generated using ogr2ogr.
The problem is when I try to display a tiled layer (mapfish singleTile
property set to 'false'). Some tiles are generated by mapserver entirely
blank !
After a few researches I think it is due to the fact that those
tiles are
extended "across" the -180°/+180° line.
For exemple, here is the imgext property from one of the calls to
MapServer
which render a blank tile :
imgext=178.59375+-1.40625+271.40625+91.40625
Do you know of a way to fix this ?
Regards,
Pierre-Benoît
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Daniel Morissette
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