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</o:shapelayout></xml><![endif]--></head><body lang=EN-AU link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hi<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I would be grateful for some tips on the steps to export a DEM with, raster and vector layers to the vtk format for visualization in 3D Paraview. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>My ultimate objective once in paraview is to export the model into a file format that can be converted into a dae file format so it can be loaded as a 3D model in google earth.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Specifically I wish to drape different images on a dem and visualise them in google earth above the surface of the area concerned. There may be a better method to achieving this from Grass however output to VTK seems to be the best option as a starting point.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>My datasets include a clipped area taken from an Aster DEM, matching aerial image rasters and vectors (ie clipped to the same shapefile) that are using the Geographic Projection EPSG code 4326.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have been able to import these into Grass and visualise them using NVIZ no problems.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have searched extensively for help on the steps to export rasters to vtk and attempted exporting rasters using both r.out.vtk and r3.out.vtk but in Paraview I either get a blank window or a single line I Paraview that can be rotated in 3d.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>If someone could advise the steps or point me to some online resources setting out the steps, I would be most grateful.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I wonder if my Aster DEM is in the correct format as it is. Or does it need converting to a different format first – ie 1 3D voxel format. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Any help would be very much appreciated.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Regards<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>David<o:p></o:p></p></div></body></html>