Sam,
I too noticed this problem. I'm not sure of the reason other than the error
message.
You can get this done in two steps.
First use gdalwarp to change the image size to 256x256 using bilinear
resampling into a GTiff format image.
Then use gdal_translate it from GTiff to PNG.
On Fri, Nov 19,
Le 19/11/2010 08:54, ariasg...@gmx.de a écrit :
I have issues generating pngs out of gdalwarper.
I did the following:
$ gdalwarper.exe --formats
One of the lines was:
PNG (rwv): Portable Network Graphics
So reading and writing png works!
Yes, but not creating a PNG !
Formats that allow
Hi,
Has EPSG changed again something with the Web Mercator projection?
The EPSG report about EPSG:3857 shows that it is using a flattened
WGS84 ellipsoid.
Hi,
I have upgraded from GDAL 1.6 (32bit Windows) to 1.7 (64 bit Windows)
and the following command no longer works:
C:\mapserver\bin\gdal\apps\gdalwarp C:\Data\Rasters\MiscSuit.tif
C:\RasterClips\mytest.tif -cutline c:\RasterClips\hello.json -te
118008.672141 177232.164284 138695.761666
Hi,
I am trying to write a program which is supposed to read geotif files, extract
the values I need, then export them in a homemade format.
As my geotif files are on several different UTM zones, I have to change
projections so that all the files I open have the same projection as the main
tile
Hi everyone,
I'm new to this list and would therefore like to say hello and thanks
for gdal in the first place :-)
I just came across a minor problem where I would like to ask for your advice -
the Global Landcover set GLC2000 is available in grid format from [0].
Associated with it is the
Hi Tamas,
I am trying to use AutoCreateWarpedVRT from C# and finding that the
reprojection is not warped. Could you confirm whether your patch has been
applied to gdal? I also couldn't find your C# example anywhere so assumed
that it hasn't been added in yet.
Thanks,
Marcus.
--
View this
Thanks very much Chaitanya, that was indeed my problem.
I am using gdal_grid to create the image that I am filtering, and am setting
nodata=255 as a parameter on the interpolation algorithm. I had expected
that this would cause nodata areas to be written as 255, and that 255 would be
marked
yrrman yrrman wrote:
the Global Landcover set GLC2000 is available in grid format from [0].
Associated with it is the .hdr file with the projection description
[2].
Apparently the map units are in decimal degree.
When I ask gdalinfo, I get the WKT description of the SRS, see [3]
Everything's
geographika wrote:
Hi,
I have upgraded from GDAL 1.6 (32bit Windows) to 1.7 (64 bit Windows)
and the following command no longer works:
C:\mapserver\bin\gdal\apps\gdalwarp C:\Data\Rasters\MiscSuit.tif
C:\RasterClips\mytest.tif -cutline c:\RasterClips\hello.json -te
118008.672141
Jukka Rahkonen wrote:
Hi,
Has EPSG changed again something with the Web Mercator projection?
The EPSG report about EPSG:3857 shows that it is using a flattened
WGS84 ellipsoid.
Travis Kirstine wrote:
Is it possible to set DNG attributes using ogr2ogr and write values to
the Text field for non point features. If this is not possible with
ogr2ogr can it be done with the api (write values to the text field
for polygon features).
Travis,
It is embarrassing how much the
Hi All,
In our project we are using GDAL 1.7.2 to load map data in various formats
as CADRG, DTED, CIB, etc.
All it's working fine but we have a big problem with the CIB format.
For this type of datasets, the GDALOpen function fails with the following
error message:
'For frameFileName, assert
morabit wrote:
Hi All,
In our project we are using GDAL 1.7.2 to load map data in various formats
as CADRG, DTED, CIB, etc.
All it's working fine but we have a big problem with the CIB format.
For this type of datasets, the GDALOpen function fails with the following
error message:
'For
Can anyone tell me why the option 'STATISTICS=YES' works when using
gdal_translate to translate from TIF to HFA (Erdas Imagine), but will
NOT work when using gdal_merge to stack multiple TIFs into HFA? I need
ArcMap to read the statistics, but it doesnt seem that they are being
written to the
Matt Hanneman wrote:
Can anyone tell me why the option 'STATISTICS=YES' works when using
gdal_translate to translate from TIF to HFA (Erdas Imagine), but will
NOT work when using gdal_merge to stack multiple TIFs into HFA? I need
ArcMap to read the statistics, but it doesnt seem that they
Perhaps related... I have an .I24 file that fails to read in GDAL,
but works OK in ArcCatalog 9.3 (in 10 it fails, since they now use
GDAL!)
Running a recent /trunk build, I get:
$ ./gdalinfo.exe F:\...\rpf\file.i24
ERROR 1: Image header too small (called from line 606)
ERROR 1: Image header too
we have an image named evi.tif:
Driver: GTiff/GeoTIFF
Files: evi.tif
evi.tif.aux.xml
Size is 4800, 4800
Coordinate System is:
PROJCS[unnamed,
GEOGCS[Unknown datum based upon the custom spheroid,
DATUM[Not_specified_based_on_custom_spheroid,
SPHEROID[Custom
Nikolaos Hatzopoulos wrote:
we will try to convert the projection:
gdalwarp -srcnodata -3000 -dstnodata -3000 -t_srs EPSG:4326 -r
near evi.tif test.tif
...
Band 1 Block=8434x1 Type=Int16, ColorInterp=Gray
Min=-1958.000 Max=9866.000
Minimum=-1958.000, Maximum=9866.000, Mean=1838.460,
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