RE: [gdal-dev] An issue about using GDALWARP todotheNTv2transformation

2011-02-15 Thread heng.feng
Hi Uwe, Sorry to bother you again. I actually need your help about another GDALWARP problem I am having. I just thought it might be better to send you an email directly about this (a shortcut:)) although I did just post a message regarding this problem on the GDAL DEV forum: http://osgeo-org.

[gdal-dev] gdalwarp reprojection problem

2011-02-15 Thread heng.feng
Hi there, When I tried to use GDALWARP to do the re-projeciton on some large GeoTiff data, the output pictures seemed to contain the gaps, which appeared to be a few horizontal lines when zooming out. The command I was using is something like this: gdalwarp --config GDAL_CACHEMAX 250 -wm 250 -co

Re: [gdal-dev] lat lon matrix tables to geotif

2011-02-15 Thread Nikolaos Hatzopoulos
So you are talking for something like this: Example VRT file for data (just to show the geolocation metadata reference): data.lon.vrt 1 data.lat.vrt 1 0 0 1 1 stuff goes here 1500 10 22180 LSB On Tue, Feb 15, 2011 at 10:34 AM, F

[gdal-dev] ERDAS RRD format for overviews

2011-02-15 Thread Armin Burger
Hi all I would like to create ERDAS Imagine compliant overview files for a larger satellite archive (mainly GeoTIFF files) in an automated way. The "gdaladdo" tool has the possibility of defining this with "--config USE_RRD YES". But this writes out not the typical ERDAS *.rrd files but adds

Re: [gdal-dev] MrSID mask band support

2011-02-15 Thread Even Rouault
Le lundi 14 février 2011 21:52:05, Brian Claywell a écrit : > I'm attempting to use CreateMaskBand() on a MrSID dataset with GDAL > 1.8.0 and receiving the error that "CreateMaskBand() is not supported > on this dataset." I presume this is because mask band support was > implemented using the GDALD

Re: [gdal-dev] MrSID mask band support

2011-02-15 Thread Frank Warmerdam
On 11-02-14 03:52 PM, Brian Claywell wrote: I'm attempting to use CreateMaskBand() on a MrSID dataset with GDAL 1.8.0 and receiving the error that "CreateMaskBand() is not supported on this dataset." I presume this is because mask band support was implemented using the GDALDefaultOverviews manage

Re: [gdal-dev] nmake.local on windows builds

2011-02-15 Thread Jeff McKenna
On 11-02-15 2:47 PM, Frank Warmerdam wrote: Well, either way will work. But *my* recommendation is creating an nmake.local with GDAL trunk and beyond. This is better than editing nmake.opt directly particularly in the case where you later want to do svn update's and rebuilds. If you hand edit th

Re: [gdal-dev] nmake.local on windows builds

2011-02-15 Thread Frank Warmerdam
On 11-02-14 08:54 AM, Jeff McKenna wrote: I personally have always just modified the nmake.opt. I am not sure what is recommended now. Can someone verify that the new recommended way is to create a 'nmake.local' file and then execute 'nmake /f makefile.vc' ? Jeff, Well, either way will work.

Re: [gdal-dev] lat lon matrix tables to geotif

2011-02-15 Thread Frank Warmerdam
On 11-02-15 01:20 PM, Nikolaos Hatzopoulos wrote: So we have three tables: one matrix for latitude values one matrix for longitude values one matrix for our data values all the matrix have the same dimensions how we can convert these three tables to geotif using gdal?? Mikos, This is a geore

[gdal-dev] lat lon matrix tables to geotif

2011-02-15 Thread Nikolaos Hatzopoulos
So we have three tables: one matrix for latitude values one matrix for longitude values one matrix for our data values all the matrix have the same dimensions how we can convert these three tables to geotif using gdal?? --Nikos Hatzopoulos ___ gdal-de

Re: [gdal-dev] gdalinfo: Corner Coordinates

2011-02-15 Thread Frank Warmerdam
On 11-02-15 07:50 AM, Emilio de Torres Fernández wrote: If I use the equations of the azimuthal equidistant projection to transform long=6d32'32.13"W and lat=36d42'16.93"N) I get x = -0.65688 and y = 0.78961, not (-4195457.112, 5006607.739). Why??? I guess I misunderstood some concept of the "Co

[gdal-dev] gdalinfo: Corner Coordinates

2011-02-15 Thread Emilio de Torres Fernández
Hello, I'm trying to understand the corner coordinates info of the following gdalinfo output: Driver: GTiff/GeoTIFF Files: mosaicoRe.tif Size is 2674, 2649 Coordinate System is: PROJCS["unnamed", GEOGCS["WGS 84", DATUM["WGS_1984", SPHEROID["WGS 84",6378137,298.257223563,

Re: [gdal-dev] Re: GetProjectionRef() difference 1.8 vs 1.7.2

2011-02-15 Thread Even Rouault
Selon cobalto : > These NITFs contain RPCs, so I mostly am unconcerned with the geotransform, > exact or approximated. However, proper interpretation of the RPCs requires > knowledge of the projection reference. In these cases, it seems somewhat > circuitous to look for a projection reference amo