On Fri, 2009-03-20 at 10:17 -0700, cullam Bruce-Lockhart wrote: > I just wanted to check on this before I muck it up, now that I finally > seem to have terragear compiled. I've got a couple of 1201X1201 grid > cells of raster data, covering a total of 0.5 deg X 0.5 deg. The > extension on the files is .dem, and according to the details that come > with it, the data format is CDED ASCII. Do I need to re-process and > format this before I can start running demchop on it to cut the > squares to the right size? (provided I'm correctly understanding what > it its that demshop does). I know that DEM-30 data needs to be > changed, but I think this is more similar to DEM-3 data. Thanks gang! > -cullam >
Hi Cullam, Not sure that I am the 'best' person to reply to your query, since in some senses I too am a 'newbie' at scenery building, and still trying to get my head around all the parts ;=)) but - There is also a deminfo tool, which, when pointed to a 'file.dem', will read and output the DEM "A" record information, if it finds one that 'conforms'... See the source dem.cxx for the various 'exit(-1)', if it does not find what it wants/needs... If the file 'passes' deminfo inspections, then maybe demchop can be used... it will read the same DEM "A" record, and proceed to read, and write out into a 'work_dir', all the SG 'buckets' it finds, from the DEM "B" record, into 10X10/1x1/<index>.arr.gz files... ready for 'terrafit' 10X10/1X1/<index>.fit.gz generation. The fact that you mentioned the file(s) you have are 1201x1201 grids is a good sign, since, for sure, the dem.cxx library 'expects' an array of [DEM_SIZE_1][DEM_SIZE_1], where DEM_SIZE_1 equals 1201... I say GO FOR IT ;=)) It is worth noting that, while it seems you can choose your output 'work_dir', when you run 'genapts --help', which is the next step after the elevation data is completed, you will see it has a fixed set of 'work-dir' it will search :- SRTM2-Africa-3 SRTM2-Australia-3 SRTM2-Eurasia-3 SRTM2-Islands-3 SRTM2-North_America-3 SRTM2-South_America-3 DEM-USGS-3 SRTM-30 so I 'think' you have to choose one of these names, but what do I know ;=)) And from your private mail, so others may add to the information, and thus improve my knowledge also :- >> an airport on Bell Island itself... 2300ft runway and a windsock... >> doesn't appear in Flightgear, so that's one of the changes I >> need to make If I understand correctly, such a change needs to be given to Robin Peel, for him to add to his x-plane/fg/... database, so this eventually gets into apt.dat.gz of flightgear, but maybe others can 'correct' this idea? Or is our apt.dat.gz now generated from 'other' sources now?? Can it include such 'additional' a/p information??? And would certainly be interested in a UAV video switching 'flightgear's view back and forth between a camera on the nose of the plane, and terragear's rendering', if you can find it... Regards, Geoff. PS: Now that 'maketg' has run successfully, maybe you should try 'makefg' in the same <WORK> directory, since they 'share' plib, osg, and fg data! You are more that 50% there... Then you can quickly 'test' any new scenery built, with your own fgfs, like - <WORK>$ ./run_fgfs.sh --fg-scenery=<new/scenery> --lat=<NN.NN> --lon=<-NN.NN> --aircraft=ufo --fdm=ufo --altitude=1000 for instant gratification ;=)) ------------------------------------------------------------------------------ Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
