As I am not familiar with .net, i assume it is similar to c++. You can find
the info under "Reading Raster Data" on this page:
http://www.gdal.org/gdal_tutorial.html .
kss
On Wed, May 19, 2010 at 10:02 PM, mail2vajram wrote:
>
> Thanks mr.Frank
>
>
> I am using .NET API.My query is
>
> When
Thanks mr.Frank
I am using .NET API.My query is
When we assign a TIFF image to DATASET, then we get RASTERXSIZE and
RASTERYSIZE.
Here i am trying to GET each pixel value(brightness value) using two for
loops.But i don't know which method is used to get this values.
Thank you..
--
View
Hamish,
I've taken some time to experiment a bit with GRASS and GRASS behaviour is
correct of course, so sorry for the noise.
I've finally identified why gdaldem (and initially Matt's hillshade utility)
got it wrong. GRASS r.mapcalc atan(x,y) function has its parameters reversed
in comparison
I tried viewing a unicode shapefile created from GDAL in ArcGIS and it didn't
work.
After some poking around I found out about the LDID value in the DBF header and
the .cpg file that Arc uses. I see that GDAL sets the LDID to some value - is
this supposed to be UTF-8, or something else?
I cou
Luca Fasano wrote:
Hi list,
I'm encountering some problems using Python Gdal API to modify *virtual*
file attributes.
In fact if I change the "Description" and "CategoryNames" attributes of
a virtual band with the Python API, the Python object is updated
correctly, but *not* the virtual file tha
mail2vajram wrote:
how to get the each pixel value from the dataset. And another requirement is
how to get the values of
( ncols
nrows
cellsize
xllcorner
yllcorner
nodata_value )
Vajram,
You don't really provide much background information. Are you planning
to do this from C/
hello
Thank you Ivan for your quick response
I am using Ubuntu Linux.
I need to know geographic coordinate values of a point which is in
UTM projection.
transformation something like UTM -> geographic coordinate (32636 -> 4326)
Which JTS library do it ? ( I have already been using it )
tha
Ivan Lucena wrote:
Other alternative?
Geotools [2] or JTS Topology Suite [3] maybe, depending what you need, just
coordinate transformation, data conversion, what kind of data, etc.
Regards,
[1] http://trac.osgeo.org/osgeo4w/
[2] http://geotools.org/
[3] http://www.vividsolutions.com/jts/jtsh
Ahmet,
Here is one example that you can find on GDAL source tree /swig/java/apps:
http://trac.osgeo.org/gdal/browser/trunk/gdal/swig/java/apps/gdaltransformer.java
What OS are you using?
You can get the library from OSGeo4W [1] for Windows is that is the case.
Other alternative?
Geotools [2]
hello
I need to do coordinate transformation in my java application
from UTM to geographic coordinates.
Does gdal have any jar library that can do this transformation ?
if there is
whare can I find it ?
What might be the other alternatives ?
regards
Ahmet Temiz
Turkey
___
Sorry, I meant to say "I looked at the ASCII files you mentioned" not "I
looked at the IMG files you mentioned". Sorry for any confusion.
Jason
-Original Message-
From: gdal-dev-boun...@lists.osgeo.org
[mailto:gdal-dev-boun...@lists.osgeo.org] On Behalf Of Jason Roberts
Sent: Wednesday, M
I'm not sure what you mean by getting the metadata information from the
source dataset to the destination dataset. If you are referring to the
metadata that ArcGIS maintains, such as all of the FGDC metadata it keeps in
an XML file, I suspect that GDAL does not recognize that metadata. That
metadat
hi.
as far as i know GDAL is much robust & Quicker.
i have converted Tiff to Ascii using Gdal 1.6.2 & found the performance
excellent
Gdal converted in 3 minutes and ArcGIS took around 7 to 8 minutes for the
same task..
Trust you are using the latest Build of 1.7.2..
cheers
Bhasker
yeah,
i did the same task with ARCGIS it took only 2 minutes only but the output
of the two datasets(gdal,ARCGIS) are same.
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mail2vajram wrote:
I t will take nearly 25 minutes to convert 250 mb of tiff image to ASCII
Thank u.
Compared to how much in ArcGIS with the same computer? And what are the
results if you do first ArcGIS and then GDAL? The order may be
important. Are all programs and files local?
Ar
I t will take nearly 25 minutes to convert 250 mb of tiff image to ASCII
Thank u.
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Sent from the GDAL - Dev mailing list archive at Nabble.com.
__
Hi list,
I'm encountering some problems using Python Gdal API to modify *virtual*
file attributes.
In fact if I change the "Description" and "CategoryNames" attributes of
a virtual band with the Python API, the Python object is updated
correctly, but *not* the virtual file that mantains old values
how to get the each pixel value from the dataset. And another requirement is
how to get the values of
( ncols
nrows
cellsize
xllcorner
yllcorner
nodata_value )
from the dataset.,,,
Thank you...
--
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http://osgeo-org.1803224.n2.nabble.com/how
El 19/05/2010 9:24, mail2vajram escribió:
when i convert data from one format to another (ex: GEoTIff to ASCII)it took
more time compared to conversion in ARCGIS.
How much?
--
Iván Sánchez Ortega
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gdal-dev@lists.osgeo.org
ht
when i convert data from one format to another (ex: GEoTIff to ASCII)it took
more time compared to conversion in ARCGIS.WHy..Is there any logic to
reduce the time
Thank you.
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