Re: [gdal-dev] The slowness of gdal_grid

Tamas, yes I believe it provides an additionnal performance increment as GDALGridInverseDistanceToAPower iterates over the whole set of OGR points even if it rejects most of them when it tests whether they are in the ellipse or not The approach in the patch goes further. It starts by making a

Re: [gdal-dev] The slowness of gdal_grid

Even, Does this approach provide a significant performance increment comparing to the search ellipse option in the inverse distance algorithm? When I've been recently playing with gdal_grid I could gain further increment by reducing the number of the floating point operations in the inner loop of

Re: [gdal-dev] The slowness of gdal_grid

Ari, the slowness of gdal_grid when fed with a big number of point features is a known issue. See ticket #2411. I had attached a patch to speed up the process. You could give it a try. Le Friday 31 October 2008 08:09:11 Ari Jolma, vous avez écrit : > I'm doing some laser scanning data -> geotif

[gdal-dev] OTB 2.6 Available

Dear all, OTB 2.6, code name Halloween, has just been released. See the detailed announce here: http://blog.orfeo-toolbox.org/uncategorized/otb-26-halloween-release-available Best regards, J. Inglada -- CNES - DCT/SI/AP - BPI 1219 18, avenue Edouard Belin 31401 Toulouse Cedex 09 - France Tel.

Re: [gdal-dev] gdal_merge

william paul wrote: Hello to everybody: I want to use gdal_merge.py to mosaic four images. The images have the same size, but the content of the images overlaps only in some areas. The value for each images is something like : 1, 2, 3, 4 I want to mosaic all the files, but I want to be able

Re: [gdal-dev] Is BigTIFF supported on GDAL 1.5.3?

Daniele Romagnoli wrote: Hi list, I have a simple quick question: Is BigTIFF supported on GDAL 1.5.3? Daniele, BigTIFF is supported by all versions of GDAL since 1.5.0 as long as you build with libtiff4. The internal version of libtiff in GDAL 1.5.0 and later is libtiff4 so building --with-li

[gdal-dev] gdal_merge

Hello to everybody: I want to use gdal_merge.py to mosaic four images. The images have the same size, but the content of the images overlaps only in some areas. The value for each images is something like : 1, 2, 3, 4 I want to mosaic all the files, but I want to be able to specify which image

[gdal-dev] Spacecraft Technology Course at CNES

Dear all, You may be interested by this. Best regards, J. Inglada > > Message transféré > > Sujet: Annonce TTVS 2009 > > Date: Thu, 23 Oct 2008 10:46:52 +0100 > > > > > > > > > > The TTVS course is an introduction to all of the techniques > > and technology

[gdal-dev] Is BigTIFF supported on GDAL 1.5.3?

Hi list, I have a simple quick question: Is BigTIFF supported on GDAL 1.5.3? Regards, Daniele -- --- Eng. Daniele Romagnoli Software Engineer GeoSolutions S.A.S. Via Carignoni 51 55041 Camaiore (LU) Italy phone: +39 0584983027 fax: +39 05

[gdal-dev] The slowness of gdal_grid

I'm doing some laser scanning data -> geotiff interpolations and I'm finding that they take some time - the current run has been going on for ~20 hours now. The current run is for a 3 by 2 kilometer area, which I'm interpolating into a raster with 1 m x 1 m cells. The data is in PostGIS but it