Re: [osg-users] reading dem/image files...
Just a followup post to my original inquiry... After appending the .gdal to my .dt1 files to get the readHeightFieldFile() to read the DTED file format, I also had to do the following to get the DTED to render correctly... osg::HeightField *grid = osgDB::readHeightFieldFile(n41.dt1.gdal); grid-setOrigin(osg::Vec3(0.0, 0.0, 0.0)); xsize = (radius * osg::PI * grid-getXInterval()) / 180.0; ysize = (radius * osg::PI * grid-getYInterval()) / 180.0; grid-setXInterval(xsize); grid-setYInterval(ysize); where radius is the mean radius of the Earth in meters. Hopefully this help someone who wants to do simple display of raw DTED data (i.e. *.dt1 files) using the default osg viewer... -Shayne -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=53690#53690 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] reading dem/image files...
Hi Shayne, If you want to use the gdal plugin in this way you'll either need to preload the gdal plugin or append the .gdal extension to your filename so that the OSG knows to load the gdal plugin to attempt the load the data. Robert. On 11 April 2013 23:19, Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC shayne.tuel...@hill.af.mil wrote: All, I'm attempting to load a height field by using osg::HeightField *grid = osgDB::readHeightFieldFile(...) where the file is a gdal supported dem/image file format. When I attempt to read the file, I'm getting the error Warning: could not find plugin to read objects from file... Is this because readHeightFieldFile() doesn't support the formats gdal supports or is there something wrong with my environment so that my plugins aren't loading correctly? My environment is window 7 and OSG 3.0.1... Thanks, -Shayne ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] reading dem/image files...
Robert, I did try the extension of gdal and that successfully loaded the file. However, the data doesn't display when I add by HeightField object to my geode for display. The osgviewer app doesn't display the data correctly either... Any thoughts as to why? -Shayne -Original Message- From: osg-users-boun...@lists.openscenegraph.org [mailto:osg-users-boun...@lists.openscenegraph.org] On Behalf Of Robert Osfield Sent: Friday, April 12, 2013 12:24 AM To: OpenSceneGraph Users Subject: Re: [osg-users] reading dem/image files... Hi Shayne, If you want to use the gdal plugin in this way you'll either need to preload the gdal plugin or append the .gdal extension to your filename so that the OSG knows to load the gdal plugin to attempt the load the data. Robert. On 11 April 2013 23:19, Tueller, Shayne R Civ USAF AFMC 519 SMXS/MXDEC shayne.tuel...@hill.af.mil wrote: All, I'm attempting to load a height field by using osg::HeightField *grid = osgDB::readHeightFieldFile(...) where the file is a gdal supported dem/image file format. When I attempt to read the file, I'm getting the error Warning: could not find plugin to read objects from file... Is this because readHeightFieldFile() doesn't support the formats gdal supports or is there something wrong with my environment so that my plugins aren't loading correctly? My environment is window 7 and OSG 3.0.1... Thanks, -Shayne ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.or g ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] reading dem/image files...
All, I'm attempting to load a height field by using osg::HeightField *grid = osgDB::readHeightFieldFile(...) where the file is a gdal supported dem/image file format. When I attempt to read the file, I'm getting the error Warning: could not find plugin to read objects from file... Is this because readHeightFieldFile() doesn't support the formats gdal supports or is there something wrong with my environment so that my plugins aren't loading correctly? My environment is window 7 and OSG 3.0.1... Thanks, -Shayne ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] reading dem/image files...
osgEarth is sort of an overkill for my little app that just displays raw DTED (*.dt1) geocells for inspection. I did find an earlier thread that addresses my question. The plugin is found if you append .gdal onto the file name (i.e. w112_n42.dt1.gdal). The plugin is now found and the file is read but the displayed data is garbled and all wrong. For a sanity check, I did the following... osgviewer --dem w112_n42.dt1.gdal and I get the same results of garbled data. Any ideas? Shayne -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=53573#53573 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
