[Gvsig_english] Reproject raster layer

[Benjamin Ducke]

Actually, gvSIG does use GDAL for raster projections.
Unfortunately, the interface to the GDAL tools is
a bit incomplete. So it is only possible to do a raster
reprojection if both source and target raster use
an EPSG SRS code. It won't work e.g. for a user-defined
SRS.

If gvSIG crashes like that, then it can only mean that
an external tool or C library has crashed or aborted
prematurely. E.g. if you try to reproject to a user-defined
SRS. The Java machine never falls onto its face like
that.

The whole reprojection engine in gvSIG really needs an
update. That's also true for the EPSG database which is
now several years outdated. Unfortunately, that's not an
easy task.

Ben

----- Original Message -----
> Hello gvSIG Team,
> I want to call your attention to an important lack (and bugs)
> regarding raster reproyection functionalities, at least compared with
> analogous applied to vector layers.
> 1) on the fly reprojection works only on vector layers and not at all
> on raster layers;
> 2) reproject layer (the command available in the Generic ToolBar
> Panel) causes a sudden crash of gvSIG; furthermore, only source and
> target projections can be set, and not the transformation method.
> 
> A solution could be to implement in gvSIG gdalwarp utility (FWTools).
> 
> Best regards
> Ernesto
> 
> -- ing. Ernesto Sferlazza
> responsabile nodo provinciale di Agrigento del SITR Sicilia
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