Thanks for looking into this. I'm not seeing very good results--my images are simply png+worldfiles that I create georesources from. I have tried with and without setting the layer's CRS.
I just tried using a WMS server (JPL's server listed on the test server list), and I saw good results in reprojection to Lambert Conic and Mercator. So am I correct in assuming that reprojection works for WMS but not for worldfile rasters? Or is the WMS server doing the projection on the server side (sorry, not familiar with how WMS works)? > I've spent a few hours today looking through the code and I can > verify that raster reprojection is happening during rendering... It > isn't perfect I admit but more cannot be done at the moment, at least > not until the new coverage support is finished being added to > geotools. I noticed now (the second read through) that you > mentioned calling layer.setCRS(). This isn't intended to do any > reprojection. Instead it is a way to declare what projection the > layer is in. This was provided for the cases where there was no > projection file or the projection file is wrong. Instead only the > viewportModel's setCRS will affect the rendering. > > Jesse > > On 14-Mar-06, at 11:32 AM, Christopher Hammack wrote: > > > I've read some messages recently regarding raster reprojection, but > > I've yet to hear confirmation as to exactly what should be working. > > > > If I create a map that is Lambert Conformal Conic (by calling the > > ViewportModelInternal's setCRS method), vector data (e.g. shapefiles, > > gml, etc.) look great. > > > > However, if I take a raster image, with a standard projection, > > create a > > layer from it and call setCRS on the layer, I see no reprojection. > > > > Looking at geotools code, it appears there is the capability to > > reproject rasters by breaking them into tiles, etc. Perhaps I have > > misunderstood this, however. > > > > As one might expect, the non-projected raster is roughly in the right > > area, but is considerably off. > > > > Any suggestions? Thanks. > > -- > > _______________________________________________ > > User-friendly Desktop Internet GIS (uDig) > > http://udig.refractions.net > > http://lists.refractions.net/mailman/listinfo/udig-devel > > _______________________________________________ > User-friendly Desktop Internet GIS (uDig) > http://udig.refractions.net > http://lists.refractions.net/mailman/listinfo/udig-devel > > -- _______________________________________________ User-friendly Desktop Internet GIS (uDig) http://udig.refractions.net http://lists.refractions.net/mailman/listinfo/udig-devel
