Hi Chris, I haven't seen this problem myself, and have built a wide range of small to whole earth databases so there must be something specific about the options/source data you are using. Would it be possible to post a test dataset and osgdem options used online so others can test it?
Robert. On Tue, Jun 2, 2009 at 11:37 PM, Chris 'Xenon' Hanson <[email protected]> wrote: > Recently, I was trying to build a very specific piece of terrain dataset, > and VPB was > refusing to build it. I'm asking for clarification about what criteria VPB > uses when > deciding whether to build or not. while I talk below about VPB, I was using > OSGDEM > directly, as it was a small and simple build. > > The input data was 90m SRTM DEM data and 30m Landsat natural color imagery. > I requested > VPB build a dataset of 1/10 of one degree wide and high (for example, 10.0N > to 10.1N and > 150.0W to 150.1W). Under these circumstances, VPB refused to build. I need to > see if I > still have the output log to see what it said. > > Changing to 30m DEM data (by interpolating the 90m up in Global Mapper) > convinced VPB to > build. Using the 90m DEM data and a wider block (10.0N to 10.2N and 150.0W to > 150.2W) also > convinced it things were ok. > > I'm imagining there is some threshold where VPB won't build if there are > fewer than N > columns wide and M rows high of input DEM data cells covering the desired > output region, > but what are N/M, and where are they defined? > > -- > Chris 'Xenon' Hanson | Xenon @ 3D Nature | http://www.3DNature.com/ > 3D World Maps: http://3d-world-map.com/ > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
