Benoit Andrieu wrote:
Thanks for the answer Frank !
So in a first time I'll be looking at making a gdaladdo bis.
By the way, do you know why Mapserver does "only" support nearest, average,
bilinear, bicubic ?
I thought it was using GDAL to do warping, but then it would natively support
cubics
Thanks Jürgen.i recoded with C-api and working fine.but now i have confusion
about functionality of C-api and C++-api.shell i continue with C-api or build
GDAL library with MinGW and use C++-api?On Mon, 30 Mar 2009 15:55:18 +0200
Jürgen E. Fischer wroteHi,On Mon, 30. Mar 2009 at 13:22:46 -,
hi,following is my code.GDALDataset *poDataset;GDALAllRegister();poDataset
= (GDALDataset *) GDALOpen( pszFilename, GA_ReadOnly );if( poDataset != NULL
){double adfGeoTransform[6];qDebug()<<"Driver:
"<GetDriver()->GetDescription()<GetDriver()->GetMetadataItem
( GDA
That sounds like bad news for my dreams ! :(
I was planning to make a try with IPP on some parts of GDAL (warping, geometry
rasterization).
Did you make some profiling ? I would be interested to know the results !
Regards,
Benoît Andrieu
> -Message reçu-
> De: Adam Nowacki
> À: "gdal
Thanks for the answer Frank !
So in a first time I'll be looking at making a gdaladdo bis.
By the way, do you know why Mapserver does "only" support nearest, average,
bilinear, bicubic ?
I thought it was using GDAL to do warping, but then it would natively support
cubicspline and lanczos.
I kno
Seth Price wrote:
I actually hope to be addressing performance in my GSoC project. I'm
interested in rewriting the GDAL resampling code to CUDA, so the graphics
card does the hard work. For example, instead of processing one pixel at a
time, the latest GeForce GTX 260 would be able to process 216
Benoit Andrieu wrote:
The quality after downsizing images with gdalwarp is so perfect that I
am now willing to include this in my overviews.
Is there any chances to have this include in future releases or is there
any difficulties I am not aware of ?
It is my intention to add a cubic resampling
Jorge Arévalo wrote:
Hello,
Thanks for the link Mateusz.
OK, I need your opinion. I've been working during 1 year (still working)
in a project that uses gdal library (developing some code), and Postgis,
to transform vectorial data (MIF files) on PNG tiles to show over google
maps.
I use Po
Hello,
Thanks for the link, and for your opinion! I'll apply for the three
projects.
Best regards
Jorge
2009/3/30 Mateusz Loskot
> Mateusz Loskot wrote:
> > Jorge Arévalo wrote:
> >> The entire process could be improved by several ways:
> >>
> >> - I would like to have an enhaced PNG driver, t
Wow ! Great !!
CUDA is ideal for this kind of processing and should be "easy" to get very high
performances.
But maybe you should want to wait for OpenCL to get out from the specs phase ?
You could support NVidia/ATI/Larrabee in a single shot... but you'll have to
wait for some times...
On my s
Mateusz Loskot wrote:
> Jorge Arévalo wrote:
>> The entire process could be improved by several ways:
>>
>> - I would like to have an enhaced PNG driver, to reduce the size of
>> the tiles. For this reason, I had a theoretical approach to
>> NeuQuant algorithm and I used pngnq. I discovered the re
Jorge Arévalo wrote:
> The entire process could be improved by several ways:
>
> - I would like to have an enhaced PNG driver, to reduce the size of the
> tiles. For this reason, I had a theoretical approach to NeuQuant
> algorithm and I used pngnq. I discovered the relation between this
> algorit
One reason that warping is different than overviews is that warping has
much more versatile resampling. For the current overview code, an integer
number of pixels are combined into one pixel, and there is no overlap
between resampling areas. For warping code, each destination pixel draws
from sourc
I actually hope to be addressing performance in my GSoC project. I'm
interested in rewriting the GDAL resampling code to CUDA, so the graphics
card does the hard work. For example, instead of processing one pixel at a
time, the latest GeForce GTX 260 would be able to process 216. I'm hoping
for CUD
Hello,
I'm trying to convert a map from OziExplorer Map file fromat to Geotiff.
FOr this i'm using the calibration points in the Map file as Ground Control
Points.
I do the following:
gdal_translate \
-gcp 203 52 529000 4191000 \
-gcp 5174 3096 544000 4182000 \
-gcp 5201 99 544000 4191000 \
-gcp
Thanks for the answer,
> > Hi list !
> >
> > I was wondering why the Lanczos and cubicspline are available in
> > gdal_warp and not gdaladdo ?
>
> Benoît,
>
> The overview builder and warper use quite different mechanisms so there
> is no close relationship between the resampling options avail
Hello,
Thanks for the link Mateusz.
OK, I need your opinion. I've been working during 1 year (still working) in
a project that uses gdal library (developing some code), and Postgis, to
transform vectorial data (MIF files) on PNG tiles to show over google maps.
I use Postgis to perform a previous
thanks,
That does the trick.
Oz.
On Mon, Mar 30, 2009 at 7:02 PM, Even Rouault
wrote:
> Oz,
>
> See the hereafter a correction to insert in your code that will hopefully
> fix
> your issue.
>
> Le Monday 30 March 2009 17:25:13 Oz Nahum, vous avez écrit :
> > Hi,
> > I have encountered a weired pr
The resampling code between gdal_warp and gdaladdo is completely separate,
thus it is basically two different projects. For the Google Summer of Code
application I'm about to submit I will be working on the resampling code
in GDAL's warper and GRASS. If I have time (and my application is
accepted!)
Benoît Andrieu wrote:
Hi list !
I was wondering why the Lanczos and cubicspline are available in
gdal_warp and not gdaladdo ?
Benoît,
The overview builder and warper use quite different mechanisms so there
is no close relationship between the resampling options available in each
case.
The q
Hi list !
I was wondering why the Lanczos and cubicspline are available in gdal_warp and
not gdaladdo ?
The quality after downsizing images with gdalwarp is so perfect that I am now
willing to include this in my overviews.
Is there any chances to have this include in future releases or is ther
Oz,
See the hereafter a correction to insert in your code that will hopefully fix
your issue.
Le Monday 30 March 2009 17:25:13 Oz Nahum, vous avez écrit :
> Hi,
> I have encountered a weired problem with gdal_rasterize.
>
> when I run the script from here
> http://trac.osgeo.org/gdal/wiki/FAQRas
Luca Fasano wrote:
Hi,
I want to create a GTiff copy to a data with projection overridden to
*utm* using gdal_translate and its "a_srs" parameter.
If I try to do this I obtain a wrongly located data.
Command I use is like following:
$ gdal_translate -of GTiff -a_srs "+proj=utm +datum=WGS84
+z
Hi,
I have encountered a weired problem with gdal_rasterize.
when I run the script from here
http://trac.osgeo.org/gdal/wiki/FAQRaster#HowcanIcreateablankrasterbasedonavectorfilesextentsforusewithgdal_rasterize
When I run:
#!/usr/bin/env python
from osgeo import gdal
from osgeo import osr
from o
Hi,
On Mon, 30. Mar 2009 at 13:22:46 -, Ajmeri Iqbal wrote:
> D:/QT_Projects/ImageRW/main.cpp:34: undefined reference to
> `GDALDataset::GetRasterCount()'
Are you using the C++ API directly? That won't work from MinGW unless
GDAL is also built with MinGW. The C-API will work.
Jürgen
--
Well...
Have you checked your path to your include files ?
Could I see the part of the code where the errors occured ?
Thx
Benoît Andrieu
b...@ixsea.com
benoit.andr...@gmail.com
- Original Message -
From: Ajmeri Iqbal
To: b...@ixsea.com
Cc: gdal-dev@lists.osgeo.org
Sent: M
Hi,Thanks Benoît Andrieubea for your reply.you are right, there is
no need any cpp file. but when i build the same code given
in GDAL tutorial with QT Creator popups the following error.g++
-enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-reloc
-Wl,-subsystem,console -mt
Hi !
You won't need any cpp files.
Personally, I am using the FWTools package which bundles dll, libs and headers
files.
You just have to compile using gdal_priv.h
Then link to gdal_i.lib
Then provide with your runtime all the dlls which gdal_fw.dll is depending to.
You will find which dlls it i
Hi,
I want to create a GTiff copy to a data with projection overridden to
*utm* using gdal_translate and its "a_srs" parameter.
If I try to do this I obtain a wrongly located data.
Command I use is like following:
$ gdal_translate -of GTiff -a_srs "+proj=utm +datum=WGS84
+zone= " src dst.tiff
Hi,Actually i m working on Generic image reading/writing and display on viewer
with all of its information, so i think i need all listed library. but dont
know how to use them in my code.i have downloded gdal_i.lib, gdal.dll and its
include .h files..h files contains only the prototype function
Hi,
I am using FWTools 2.2.9
So I am releasing my softwares with most of the dlls (you can use depends to
find which).
The linking is done with :
gdal_i.lib
geos_i.lib
geotiff_i.lib
libtiff_i.lib
proj_i.lib
But yo may want to use more or less libraries...
Regards,
Benoît Andrieu
b...@ixsea.co
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