Hi All,
If I know the co-ordinates for all 4 corners of a non-north-up image, how
can I calculate the 6 GDAL affine transform parameters?
Cheers,
Fodder
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Jack Kirkpatrick wrote:
Greetings,
My apologies in advance if the following is stupid but I am not a GIS
expert (probably not even a GIS novice).
Some time ago I had call to transform corner coordinates from
"Australian Geodetic Datum 1966" to WGS84 so that I could accurately
drape some nau
Greetings,
My apologies in advance if the following is stupid but I am not a GIS expert
(probably not even a GIS novice).
Some time ago I had call to transform corner coordinates from "Australian
Geodetic Datum 1966" to WGS84 so that I could accurately drape some nautical
charts in GeoTiff for
Frank, thanks (again) for your help. I'm in business. I stepped into
the code and found that WMS support was being built in (after I
installed curl and changed the nmake.opt file). For some reason,
though, WMS doesn't show up on gdalinfo --formats. The reason my open
was failing was because I h
Dear Ari and Frank:
Thanks very much for helping figure out the problem.
Yes, I have checked. I am using Xerces 2.7+ GDAL 1.6 win32.
but I download the lastest one from
http://download.osgeo.org/gdal/win32/1.6/gdalwin32exe160.zip
It is would be nice to replace Xerces 2.7 with 3.0 in that packages.
Frank Warmerdam wrote:
Motion: Approve GDAL/OGR 1.4.5RC2 as 1.4.5 Release.
+1
Daniel
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Daniel Morissette
http://www.mapgears.com/
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Joel Odom wrote:
I'm trying to use GDAL to pull down WMS images. I installed curl and
built with it. (I can see that libcurl.dll is being loaded.) When I
pass in my XML service descriptor file to GDALOpen, I get, "ERROR 4:
`C:\Documents and Settings\jo44\Desktop\ogr_data\wms.xml' not
recognise
hi list,
I just finished building gdal 1.6 on redhat Linux (using gcc 4.2.2,
python 2.5.2).
After taking Even Rouault and Frank's suggestion, I used the minimized
driver approach. It seemed to work.
./configure --prefix=/home/sgong/dev181/dist --with-png=internal
--with-libtiff=internal --with-
Frank Warmerdam kirjoitti:
Ari Jolma wrote:
Frank Warmerdam kirjoitti:
Xiaoyu Guan wrote:
The GML which i used is located at
http://www.openlayers.org/dev/examples/gml/multipolygon.xml
but the polygon.shp file does not contain the first feature's and
the third feature's attribute
Interesting
Ari Jolma wrote:
Frank Warmerdam kirjoitti:
Xiaoyu Guan wrote:
The GML which i used is located at
http://www.openlayers.org/dev/examples/gml/multipolygon.xml
but the polygon.shp file does not contain the first feature's and the
third feature's attribute
and this seemed to produce a shapefil
Thanks, Brent. I'll give this a whirl.
Cheers,
Greg
Brent Fraser wrote:
Greg,
OpenJump is a good topology/geometry fixing tool. Load your
shapefile and do Tools->Generate->Buffer, set the Buffer distance to 0
to clean up the polygon vertices. I seem to recall it may have a
problem pres
Greg,
OpenJump is a good topology/geometry fixing tool. Load your shapefile and do
Tools->Generate->Buffer, set the Buffer distance to 0 to clean up the polygon
vertices. I seem to recall it may have a problem preserving attributes when the
results are saved as a shapefile, but you may be a
Frank Warmerdam kirjoitti:
Xiaoyu Guan wrote:
The GML which i used is located at
http://www.openlayers.org/dev/examples/gml/multipolygon.xml
but the polygon.shp file does not contain the first feature's and the
third feature's attribute
and this seemed to produce a shapefile with all three f
I'm trying to use GDAL to pull down WMS images. I installed curl and
built with it. (I can see that libcurl.dll is being loaded.) When I
pass in my XML service descriptor file to GDALOpen, I get, "ERROR 4:
`C:\Documents and Settings\jo44\Desktop\ogr_data\wms.xml' not
recognised as a supported fi
Brent,
My Google search didn't turn up much of use (most of the results were
PostGIS-specific). Do you know of a tool that would tell me which
feature(s) have problems? Do you know of a tool that might be able to
fix these polygons?
Thanks!
Greg
Brent Fraser wrote:
Greg,
It means the
Greg,
It means the GEOS topology library is having problems with geometry of your input
shapefile. Most likely related to duplicate vertices (or near-duplicate) in a polygon.
Do a Google for "side location conflict". It would be nice if it spat out the
FID of the offending polygon...
Bre
Hi Brent,
Thanks for the example. Here's what I got:
Macintosh-4:starspan_tests gregederer$ starspan2 --progress --RID none
--vector
/Users/gregederer/servers/geoserver_data/data/shapefiles/Admin/afadmn2n.shp
--raster rfe_2006_04_pct.tif --stats results.txt avg
starspan: --out-prefix: ?
T
Greg,
I've used StarSpan to do similar things; in my case I wanted "mode" not "avg".
Using v1.2.01 (I don't think I made major mods to the source):
starspan2.exe --progress --RID none --vector boundaries.shp --raster
big.tif --stats results.txt mode
I edited the resulting results.
Eran Burstain wrote:
Hi !
Lately, the EPSG has added topocentric coordinate system, with codes :
System : 6512
Methods : 9836,9837
Parameters : 8834..8839
Can I or how can I Convert/Create a raster band (of image or of
elevation) to that system ?
Is there a way to describe the system without
Hello all,
I'm a GDAL newbie. I have a shape file containing subnational
boundaries for Africa. I have a raster containing rainfall for Africa.
I need to pull out the spatial average of rainfall for each of the
subnational units.
I think that I might be able to pull this off using StarSpa
Folks,
As I mentioned a couple weeks ago, I am proceeding with producing stable
releases. I have produced a release candidate for a GDAL 1.4.5 release.
Once released I anticipate this will be the last GDAL 1.4.x release. The
RC2 release includes the "make install - man" problem fix and is other
Even Rouault wrote:
Le Sunday 14 December 2008 19:47:03 Frank Warmerdam, vous avez écrit :
Folks,
As I mentioned a couple weeks ago, I am proceeding with producing stable
releases. I have produced a release candidate for a GDAL 1.4.5 release.
Once released I anticipate this will be the last GD
Hi Micheal,
I'm afraid I misadvised you. Nearblack and gdal_rasterize can't write to
file formats which don't allow updating in place. Is using jp2 a hard
requirement? Have you tried the available geotiff compressions
(http://www.gdal.org/frmt_gtiff.html look at Creation Options)? Black
and w
Xiaoyu Guan wrote:
Hi Frank:
Thanks very much for your reply.
About GML files, actually, I grab The GML files from OpenLayers.org.
as you know OpenLayers can read GML files directly.
The GML which i used is located at
http://www.openlayers.org/dev/examples/gml/multipolygon.xml
You have to chang
I tried that but it doesn't seem to write to JP2KAK. If I do this:
nearblack mosaic_jp2.jp2
I get this error:
0...10..ERROR 6: WriteBlock() not supported for this dataset.
ERROR 1: GetBlockRef failed at X block offset 1, Y block offset 19
ERROR 6: WriteBlock() not supported for this dataset.
ERR
Hi,
You can try OSGeo4W package "gdal16" together with binaries for MrSID
plugin ("gdal16-mrsid" package).
Unfortunately there are now some troubles with EPSG:900913 (Spherical
Mercator a la Google Maps) so I did not recommend yet the switch from
gdal-dev to gdal16 package for OSGeo4W users.
The
Hi Frank:
Thanks very much for your reply.
About GML files, actually, I grab The GML files from OpenLayers.org.
as you know OpenLayers can read GML files directly.
The GML which i used is located at
http://www.openlayers.org/dev/examples/gml/multipolygon.xml
You have to change xml to gml by yoursel
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