[gdal-dev] GDAL - JAVA getting Elevation Data

2017-02-01 Thread Mahir Karabacak
Hi All, I hava Java code below which gets elevation data according to coordinate. My question; what if I have multiple GeoTiff files, how can I read all into one dataset or merge all data into one dataset? Thanks in Advance, Mahir KARABACAK private static Dataset elevationDataSet; private sta

Re: [gdal-dev] GDAL - JAVA getting Elevation Data

2017-02-01 Thread Michael Smith
Use gdalbuildvrt to merge all your rasters to a single virtual file and the open that vrt. Michael Smith Remote Sensing/GIS Center US Army Corps of Engineers > On Feb 1, 2017, at 4:02 AM, Mahir Karabacak wrote: > > Hi All, > > I hava Java code below which gets elevation data according to coo

Re: [gdal-dev] Question on 0th IFD offset when producing a JPEG-Compressed GeoTIFF (GDAL 1.11 vs 2.x)

2017-02-01 Thread Daniele Romagnoli
Hi Even, another question. What about the internal libtiff implementation? There will be any difference in building against a system (released) libtiff version with respect to the internal version? Cheers, Daniele On Tue, Jan 31, 2017 at 6:34 PM, Even Rouault wrote: > On mardi 31 janvier 2017

Re: [gdal-dev] Question in orthographic projection usage with PROJ4

2017-02-01 Thread Andre Joost
Am 31.01.2017 um 17:46 schrieb niels.vonfestenberg-packisch@rohde-schwarz.com: Hi all, I would like to transform local cartesian coordinates into longitude and latitude. According to all the documentation I could find, I tried doing this (in C++, specifying a center for the orthographic proje

[gdal-dev] Fwd: Google Summer of Code ideas page: action required latest by February 5th!

2017-02-01 Thread Even Rouault
The deadline is in 4 days. Our usual placeholder page is at https://trac.osgeo.org/gdal/wiki/SummerOfCode Even -- Forwarded Message -- Subject: [gdal-dev] Google Summer of Code ideas page: action required latest by February 5th! Date: dimanche 22 janvier 2017, 03:19:01 CET Fro

Re: [gdal-dev] Change of behavior ?? GDALRasterBand:IReadBlock vs RasterIO ?

2017-02-01 Thread asmita
I implemented the IReadBlock, still same issue with the WarpOperation ( that is the code path I am hitting essentially). The issue I see now is the warp does miss some band info or something happens that the entire mosaic is black instead of the imagery. Note that these are non pallette imageries