Réponse provenant de la list CONS-GIS:
"You should introduce a certain modification to the coordinate reference system (CRS) you are using. You just need to define correctly your CRS bounds to cover approximately your area of interest, then you have to produce a rectangular (or any other shape) mask withing the defined CRS bounds, and finally clip out the GIS data layers so that they only cover your area of interest. After doing this last step, you should notice that your problem is gone. I would recommend ArcGIS as a very handy tool for that kind of geoprocessing work."
Gedas Vaitkus, GIS Group, Institute of Ecology, Vilnius
Posté par nicolas, le 22 mars 2006