Re: [osg-users] Convert .earth file to .osg format

2019-06-02 Thread Steven Jones
All is well - Topic can be closed. I found the info I needed and have successfully created both osg and ive databases for the terrain data I'm using. Many thanks for all of the help! Cheers, Steven -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=7

Re: [osg-users] Convert .earth file to .osg format

2019-05-04 Thread Chris Hanson
WHen I say build a dataset, I mean, run it through osgdem and produce a .osg or .osgb and test it. Start simple, then if you get that working, add complexity until you find the breaking point, then fix whatever you identify as being the problem. On Sat, May 4, 2019 at 12:16 AM Steven Jones wrote

Re: [osg-users] Convert .earth file to .osg format

2019-05-03 Thread Steven Jones
Chris, I can definitely do that, since I have the original files (imagery and elevation) in segregated in separate sub-directories. I'd still need to be able to visualize them though as I test the build process to ensure that I'm seeing the 3D aspect of the overall terrain. With a VRT, I'm not

Re: [osg-users] Convert .earth file to .osg format

2019-05-03 Thread Chris Hanson
I really feel like you need to step back a couple of steps and get a working process. Like, can you build a dataset with JUST elevation data and just ONE simple GeoTIFF terrain elevation file? When you have a process that works, you can work forward, adding complexity and watch for where it breaks

Re: [osg-users] Convert .earth file to .osg format

2019-05-03 Thread Steven Jones
Hi Chris "D", Thanks - I'd done some researching and came to the same basic conclusion... For now, I'm going to trust that the values are as they should be... I've created a VRT file using gdalbuildvrt but am not sure how that can be used now to ultimately create an osg (or osgb) file to use wi

Re: [osg-users] Convert .earth file to .osg format

2019-05-03 Thread Chris Djali
Hi, I think they're talking about the C preprocessor definition, FLT_MAX rather than anything specific to anything used here: https://www.tutorialspoint.com/c_standard_library/float_h.htm It's the maximum value of an IEEE 32-bit float. Cheers, Chris -- Read this topic online h

Re: [osg-users] Convert .earth file to .osg format

2019-05-03 Thread Steven Jones
Sorry to be a bother Chris, but I've drilled through QGIS' various methods of viewing GeoTiff metadata but cannot find anything referencing any values named "Flt_Max". I must be missing something... ... Cheers, Steven -- Read this topic online here: http://forum.openscenegrap

Re: [osg-users] Convert .earth file to .osg format

2019-05-02 Thread Chris Hanson
I would think QGIS would do it. There may be other, simpler tools too. On Thu, May 2, 2019 at 1:56 AM Steven Jones wrote: > Chris, > > > Chris Hanson wrote: > > It's a single-precision 32-bit floating point TIFF. Values could be > anywhere from -FLT_MAX to FLT_MAX. > > > > I've tried several met

Re: [osg-users] Convert .earth file to .osg format

2019-05-01 Thread Steven Jones
Chris, Chris Hanson wrote: > It's a single-precision 32-bit floating point TIFF. Values could be anywhere > from -FLT_MAX to FLT_MAX. > > I've tried several methods to try to find the FLT_MAX values but so far no > joy, so I have no idea what it could be set to... Can you recommend a method >

Re: [osg-users] Convert .earth file to .osg format

2019-05-01 Thread Chris Hanson
It's a single-precision 32-bit floating point TIFF. Values could be anywhere from -FLT_MAX to FLT_MAX. I'm just making sure it doesn't have weird values like sea level being 0 and Everest being 8.8 (in units of kilometers). On Wed, May 1, 2019 at 4:20 PM Steven Jones wrote: > Chris, > > Not sur

Re: [osg-users] Convert .earth file to .osg format

2019-05-01 Thread Steven Jones
Chris, Not sure what value range you are referring to (still learning all I can regarding the GeoTiff file structures). "This seems plausible. Did you check to see what value range this elevation TIFF has?" Steven -- Read this topic online here: http://forum.openscenegraph.org

Re: [osg-users] Convert .earth file to .osg format

2019-04-30 Thread Chris Hanson
> > > Band 1 Block=1024x1 Type=Float32, ColorInterp=Gray > don't see the measurement value type, but I'm fairly sure they are both > in meters. (I also confirmed the above data in QGIS.) > This seems plausible. Did you check to see what value range this elevation TIFF has? I can't see anything o

Re: [osg-users] Convert .earth file to .osg format

2019-04-30 Thread Steven Jones
Chris, When I examine an image GeoTiff with GDALinfo, here's what is output: Driver: GTiff/GeoTIFF Files: N33W118_D004_S001_T001_L00_U0_R0a.tif Size is 1024, 1024 Coordinate System is: GEOGCS["WGS 84", DATUM["WGS_1984", SPHEROID["WGS 84",6378137,298.257223563, AUTHORITY["E

Re: [osg-users] Convert .earth file to .osg format

2019-04-30 Thread Glenn Waldron
Steven, You should consider making a GDAL VRT. It's a format for compositing source files together into one virtual data source. You can build it by hand or use the gdalbuildvrt tool. https://www.gdal.org/gdalbuildvrt.html Glenn Waldron / osgEarth On Mon, Apr 29, 2019 at 7:02 PM Chris Hanson w

Re: [osg-users] Convert .earth file to .osg format

2019-04-29 Thread Chris Hanson
On Mon, Apr 29, 2019 at 9:09 PM Steven Jones wrote: > I receive no error messages, and the build completes, but when I use > osgviewer to inspect the .ive file, it is completely flat - no visible > change in elevation - terrain resolution is perfect though. Is the imagery in place and proper

Re: [osg-users] Convert .earth file to .osg format

2019-04-29 Thread Steven Jones
Chris, I've been trying osgdem to build the database, and pointing to the overall imagery and elevation sub-directories works fine. I receive no error messages, and the build completes, but when I use osgviewer to inspect the .ive file, it is completely flat - no visible change in elevation -

Re: [osg-users] Convert .earth file to .osg format

2019-04-28 Thread Chris Hanson
Also, to add to that, osgdem relies heavily on GDAL to ingest raster data. GDAL has several tricks for combining multiple files or directories and referencing them as one dataset. For example: https://gdal.org/gdal_vrttut.html I don't recall ever using that technique with VPB, but in theory it co

Re: [osg-users] Convert .earth file to .osg format

2019-04-28 Thread Robert Osfield
Hi Steven, It's probably getting on decade since I last used or did any serious worked on VPB so can't recall the specific command line options to use off the top of my head. So will just provide some general notes that may help. It's possible to have osgdem (single process build) and vpbmaster

Re: [osg-users] Convert .earth file to .osg format

2019-04-27 Thread Steven Jones
I'd downloaded that guide before and briefly reviewed it, but that was when I first installed VPB but hadn't yet tried it. It would certainly be much more efficient to combine the imagery and elevation data and create an osg or ive formatted database. But, since I have so many GeoTiffs and elev

Re: [osg-users] Convert .earth file to .osg format

2019-04-26 Thread Chris Hanson
Basically, osgEarth is really good at doing fancy layering of data sources. VPB is a little trickier, but can do most of the same things (for elevation and raster data anyway). I was thinking it might be easier to use osgEarth to turn your multiple layers of GeoTIFF images into a single elevation

Re: [osg-users] Convert .earth file to .osg format

2019-04-26 Thread Steven Jones
Hi Scott, Are you referring to a TMS dataset? Or something different? (All of my elevation and imagery files are tiled GeoTiffs.) Thanks! Steven -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=75903#75903

Re: [osg-users] Convert .earth file to .osg format

2019-04-25 Thread Chris Hanson
I don't have a ready to consume tutorial, but your first goal is to use osgEarth to build a dataset by merging all your data together. The second is to feed that to VPB. Let me think on the matter a bit. On Thu, Apr 25, 2019 at 7:09 PM Steven Jones wrote: > Chris - Is there a tutorial of some

Re: [osg-users] Convert .earth file to .osg format

2019-04-25 Thread Steven Jones
Chris - Is there a tutorial of some sort that would cover the basic steps to begin building a database in VPB using GeoTiff elevation and imagery data for the input? I've downloaded and compiled VPB (MS Windows), but since it's mainly command-line driven, it's not all that intuitive. Also, mos

Re: [osg-users] Convert .earth file to .osg format

2019-04-25 Thread Chris Hanson
You're welcome. It may also be conceivable to use osgearth tools to produce a composite tilemap set to feed to VPB, giving you some of the best of both worlds. On Thu, Apr 25, 2019, 4:50 PM Steven Jones wrote: > I'd considered VPB previously, but now it looks like it may be the most > practica

Re: [osg-users] Convert .earth file to .osg format

2019-04-25 Thread Steven Jones
I'd considered VPB previously, but now it looks like it may be the most practical solution to meet our needs. Wish me luck, and thanks again Chris! Cheers, Steven -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=75897#75897 __

Re: [osg-users] Convert .earth file to .osg format

2019-04-23 Thread Chris Hanson
You may need to play with layering and other things to get the results you want at the borders. Alternately, have you considered if your work could be built through Virtual Planet Builder, which DOES actually just produce "dumb" .osg (actually, .osgb is recommended) files? The result might be lar

Re: [osg-users] Convert .earth file to .osg format

2019-04-23 Thread Steven Jones
Chris - Thanks for the answer. I do understand the nuts & bolts of the OSG architecture, but was looking for a way to further streamline loading of a very large quantity of GIS imagery and elevation data that are referenced within the .earth file (over 4,000 images and close to 1,000 elev files)

Re: [osg-users] Convert .earth file to .osg format

2019-04-22 Thread Chris Hanson
So, the .earth format is not really a geometry format. It's a descriptor of a special node data file type used by the osgEarth library, and not representable in a .osg file. You can't use a .earth file without the osgEarth library. If you HAVE the osgEarth library, you can already load .earth and

[osg-users] Convert .earth file to .osg format

2019-04-22 Thread Steven Jones
Hope someone can help with this: I need to convert an earth file to the .osg format. I've not found any solid info yet as to how this can be done, or if it can be done at all. The 3rd party program this is for can load .osg or .ive GIS maps. I've tried osgconv, and it creates a new file with th