Re: [gdal-dev] GXF -- Grid eXchange File to AAIGrid -- Arc/Info ASCII Grid No Value Issue

2010-06-14 Thread Even Rouault
David, the issue was in the GXF driver that returns the nodata value as a double precision real, but the pixel data as single precision real. So when translating to AAIGrid, you can see the difference in precisions. In trunk (r19868), I've made 2 changes : * cast nodata value to float to be con

Re: [gdal-dev] gdal and png color quantization.

2010-06-14 Thread Kyle Shannon
Hermant, I think that this was a proposed project for the google summer of code, but I don't know if anyone picked it up. It seems like a good addition and it is obviously on GDAL's radar. I have not heard anything about the selected SoC projects though. kss # Kyle

[gdal-dev] GXF -- Grid eXchange File to AAIGrid -- Arc/Info ASCII Grid No Value Issue

2010-06-14 Thread David Baker (Geoscience)
All, Using OpenEV from FWTools version 2.4.7 to convert the GXF file found at http://pubs.usgs.gov/of/2000/ofr-00-0042/data/ from the GXF format to AAIGrid format I have found an issue. In the GXF file the #DUMMY value/string is -1e32 and this is the same value/string found in the data portion

Re: [gdal-dev] ESRI file geodatabase support

2010-06-14 Thread Stefan Keller
Hi all At ESRI Developer Summit, March 22–25, 2010, Palm Springs, CA, they talked about the ArcGIS 10 to be expected in June 2010. But somebody (http://tinyurl.com/34nk558, 19. April 2010, german) said that the opening of the API (C++ only) won't make it into this release. But since this is a sto

RE: [gdal-dev] SRTM maps and altitude...

2010-06-14 Thread John Donovan
Here's a little Python script I knocked up for just this purpose. # Quick and dirty utility to get the value of a pixel in a georeferenced # image file, given the map coordinates. Uses nearest-neighbour and doesn't # try to do anything clever. # By John Donovan 2010, released into the public domai

AW: AW: [gdal-dev] gdalwarp and GTiff creation option NBITS

2010-06-14 Thread Fischer, Andreas
Hi Frank, thanks for your hints. I could finally use tiffinfo very easily from FWTools-Shell, for I'm testing with a windows machine :-) So here are the outputs from tiffinfo for the different files. a) = original file b) = original file transformed with gdalwarp (gdalwarp -s_srs C:\Programme\F

Re: [gdal-dev] cmake???

2010-06-14 Thread Howard Butler
On Jun 14, 2010, at 7:40 AM, Mateusz Loskot wrote: > On 14/06/10 13:32, David Burken wrote: >> Hi Everyone, >> >> Just curious if there are any thoughts on migrating to cmake? > > A prototype project's started: > > http://code.google.com/p/gdal-cmake/ > > However, it's a bit suspended, tempor

Re: [gdal-dev] cmake???

2010-06-14 Thread Yevgen Antymyrov
Mateusz Loskot wrote: A prototype project's started: http://code.google.com/p/gdal-cmake/ However, it's a bit suspended, temporarily I hope. Best regards, My issue #1 is still the only one :) -- Yevgen ___ gdal-dev mailing list gdal-dev@lists.osg

[gdal-dev] cmake???

2010-06-14 Thread David Burken
On 14/06/10 13:32, David Burken wrote: Hi Everyone, Just curious if there are any thoughts on migrating to cmake? A prototype project's started: http://code.google.com/p/gdal-cmake/ However, it's a bit suspended, temporarily I hope. Best regards, -- Mateusz Loskot, http://mateusz.loskot.net

Re: [gdal-dev] SRTM maps and altitude...

2010-06-14 Thread David Burken
On 06/14/2010 04:41 AM, Gianni Olivieri wrote: 2010/6/14 Gianni Olivieri: 2010/6/11 Gianni Olivieri: 2010/6/11 Matt Klaric: While you certainly can accomplish this using GDAL, you'll need to first figure out which hgt file to open, then translate the geographic coordinate to

Re: [gdal-dev] cmake???

2010-06-14 Thread Mateusz Loskot
On 14/06/10 13:32, David Burken wrote: Hi Everyone, Just curious if there are any thoughts on migrating to cmake? A prototype project's started: http://code.google.com/p/gdal-cmake/ However, it's a bit suspended, temporarily I hope. Best regards, -- Mateusz Loskot, http://mateusz.loskot.net

[gdal-dev] cmake???

2010-06-14 Thread David Burken
Hi Everyone, Just curious if there are any thoughts on migrating to cmake? Regards, Dave ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev

Re: [gdal-dev] SRTM maps and altitude...

2010-06-14 Thread Massimo Di Stefano
If you need only the core library (it includes the ossim-height executable) you will find ossim packaged for debian unstable (SID) [1] or the complete set of apps for ubuntu 9.04 [2] [1] http://wiki.debian.org/DebianGis/PackageList [2] https://launchpad.net/~ubuntugis btw using gdal you can read

Re: [gdal-dev] getting reason info when is_valid() returns false

2010-06-14 Thread Peter Freimuth
Paul Meems schrieb: > We're using GDAL and GEOS in MapWindow GIS and we use the GEOS version of > IsValid(). I think it is the same GDAL is using. > The latest version of GEOS has a IsValidReason, telling you what was wrong. > > I hope it helps, > > Thanks, > > Paul > > -- > Paul Meems > Release ma

Re: [gdal-dev] SRTM maps and altitude...

2010-06-14 Thread Gianni Olivieri
2010/6/14 Gianni Olivieri : > 2010/6/11 Gianni Olivieri : >> 2010/6/11 Matt Klaric : >>> While you certainly can accomplish this using GDAL, you'll need to first >>> figure out which hgt file to open, then translate the geographic coordinate >>> to the image coordinate to know what pixel value to l

Re: [gdal-dev] SRTM maps and altitude...

2010-06-14 Thread Gianni Olivieri
2010/6/11 Gianni Olivieri : > 2010/6/11 Matt Klaric : >> While you certainly can accomplish this using GDAL, you'll need to first >> figure out which hgt file to open, then translate the geographic coordinate >> to the image coordinate to know what pixel value to lookup. >> >> An alternative soluti