Selon tasmi...@rockwellcollins.com:
GDAL can also read at the dataset level. Look at the GDALRasterIO() /
GDALDataset::RasterIO() call. By adjusting the nPixelSpace, nLineSpace and
nBandSpace values, you can fill a pixel-interleaved buffer, or a
line-interleaved buffer or a band-interleaved buffer
Hi there,
I am working on software that takes geospatial imagery (usually GeoTIFFs)
and converts it into textures that are used in our rendering engine. The
application also takes terrain files and generates terrain geometry.
When we process our imagery (RGB), we want to do so on a per pixel
Even wrote:
The crash was due to a bug in my code in fact. I've also reworked the algorithm
to operate on single polygons instead of multipolygons. That seems to be enough
to avoid triggering the GEOS topology exception in the countries.shp case. So if
you apply r17716 + r17717, it should work o
Selon Ted Spradley :
When OGR creates a PG table, the name of the primary key is 'OGC_FID'. So, you
just have to replace 'oid' by 'OGC_FID' in your example.
>
> Hi,
>
> I have used ogr2ogr to load data from shapefile countyp020.shp into
> db=project1, following Tyler Mitchell's 'Web Mapping Illus
On Wed, Sep 30, 2009 at 2:28 PM, Agustin Lobo wrote:
> Which is the appropriate reference to GDAL
> for being included in an article?
For citing GRASS GIS, we suggest a list of citations, see
http://grass.osgeo.org/download/index.php#citing
-> for example:
"GRASS Development Team, 2009. Geograph
Hi,
I have used ogr2ogr to load data from shapefile countyp020.shp into
db=project1, following Tyler Mitchell's 'Web Mapping Illustrated'.
> ogr2ogr -f "PostgreSQL" PG:dbname=project1 countyp020.shp
Tyler explains that: to optimize for Mapserver we can create an index on the
unique ID for the
Selon Hermann Peifer :
The crash was due to a bug in my code in fact. I've also reworked the algorithm
to operate on single polygons instead of multipolygons. That seems to be enough
to avoid triggering the GEOS topology exception in the countries.shp case. So if
you apply r17716 + r17717, it shou
I am using the S57Reader class to read in S-57 data files and a user has
reported that while applications like SeeMyEnc show annotation points with
text, I cannot seem to find any returned features that include those
annotations. There is a sample data file at
http://www.globalmapper.com/Incoming/1
Because JPEG2000 images inherently contain a pyramid of reduced
resolution images, the Kakadu Software demo application kdu_expand,
that is available for free for Win32, Mac OS X, Linux, Solaris,
provides a very fast way to create reduced resolution overview images.
For me, the kdu_expand -
Hi Frank and Even
I need to investigate further, but I am suspecting that this issue may
be specific to the MrSid format. My tests have been with a collection
of 24 sid images. I just went back to an older project where I have
188 tiles in GeoTiff format (and similar base resolution) and QGIS
work
Thank you Hermann!
On Tue, Sep 29, 2009 at 7:20 PM, Hermann Peifer wrote:
> Nicholas Efremov-Kendall wrote:
>
>> Hi all,
>>
>> Just a quick question: This isn't a huge file, three entities, would it
>> work to just change the characters in a text editor?
>>
>>
> Yes. Just make sure that your tex
Selon Frank Warmerdam :
Craig,
Sorry for giving you wrong directions. Frank is obviously right. I somehow got
confused by the fact that the VRT driver doesn't expose overviews, but its
implementation of RasterIO() can indeed use overviews of the underlying rasters.
I could check it with OpenEV by
Even Rouault wrote:
Selon Craig Leat :
Craig,
I suppose you are speaking about bad performance when not viewing the VRT at its
full resolution ? (at full resolution, the overhead of VRT should be small
hopefully)
I'm afraid there's little you can do to improve the situation in a simple way.
As
Hi Even
Thanks for your valuable comments. If I understand you correctly I can
either access the overviews in the tiles by hand crafting vrt files
for each overview level or sacrifice disk space and generate external
overviews using your gdalwarp trick [1].
A comment from Frank [2] back in 2005 c
Which is the appropriate reference to GDAL
for being included in an article?
Thanks
Agus
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Selon Craig Leat :
Craig,
I suppose you are speaking about bad performance when not viewing the VRT at its
full resolution ? (at full resolution, the overhead of VRT should be small
hopefully)
I'm afraid there's little you can do to improve the situation in a simple way.
As you noticed, the VRT
Paul,
You can download any of the -dev packages containing the required libs
to compile against libecw at this location:
http://vbkto.dyndns.org/sdk/
Best regards,
Tamas
2009/9/30 Paul Meems :
> Hi all,
>
> We're using GDAL and libecwj2.dll in our application: MapWindow GIS
> (www.mapwindow.
Paul Meems wrote:
Mateusz,
I'll get the compiler and compilation procedure (command, flags) tonight
and if needed I'll send them to the list.
I can set WIN32 but don't I need WIN64?
No, you don't as it's always defined:
Windows 32-bit: WIN32
Windows 64-bit: WIN32 && WIN64
Best regards,
--
Paul Meems wrote:
Mateusz,
I'm getting error in NCSTypes.h #error : unknown machine type will
require custom 64 bit variables
It looks like there may be something misconfigured, build configuration,
and "#ifdef WIN32" is not being caught (WIN32 not defined), so it skips
to unknown platform cl
Paul Meems wrote:
GDAL is compiling great, except when using libecwj2.dll. Because I can
't compile the libecwj2 library for Win-64Bit.
In some of the header files is stated when compiling to a 64-Bit version
raise an error.
What errors?
It's said to say, but code of libecwj is well-known [1]
Hi
I am having performance issues with gdal raster vrt files and since I
am not experienced with this format I am hoping someone can offer some
advice. I built the vrt files from a collection of MrSid images using
gdalbuildvrt. I then used sed to add the tag and changed from
to . I am using QGIS
Hi all,
We're using GDAL and libecwj2.dll in our application: MapWindow GIS (
www.mapwindow.org)
I'm trying to compile a Win-64Bit version of MapWindow. To do that I need to
compile all supporting libraries to Win-64Bit version as well.
GDAL is compiling great, except when using libecwj2.dll. Beca
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