On Thu, Mar 10, 2011 at 05:17:39PM -0500, Frank Warmerdam wrote:
> On 11-03-10 05:07 PM, Wendell Turner wrote:
> >Is there a way to force pixels outside of the cropping
> >polygon to be 'not there', or transparent? Is there a burn
> >value that indicates that?
On Wed, Mar 09, 2011 at 06:05:20PM -0600, Marius Jigmond wrote:
> On Wed, 2011-03-09 at 12:35 -0500, Frank Warmerdam wrote:
> > On 11-03-09 11:51 AM, Wendell Turner wrote:
> > >
> > > Do any of the gdal utilities crop an image on non-square
> > > boundaries?
Do any of the gdal utilities crop an image on non-square
boundaries?
I use gdal_translate with -projwin ulx uly lrx lry to crop
an image that is square (left and right edges are vertical,
and the top and bottom edges are horizontal). Is there a
command that will crop other shapes, for instance a
Is there a utility that will combine multiple shapefiles
into one shapefile? I tried ogr2ogr with several
combinations of arguments (overwrite, append, update) but it
didn't work. Is there another utility that will will
combine them?
(mapserver queries don't seem to work right on layers with
mul
.vrt
cp centgrtlakes_radaronly.gif test.gif
gdal_translate foo.vrt test.gif
gimp centgrtlakes_radaronly.gif test.gif
Also, I notice that the test.gif file is about ten times the
size of the original one.
Thanks,
Wendell
> On Wed, Apr 7, 2010 at 12:52 AM, Wendell Turner wrote:
>
> > I want to change
I want to change the color palette on a gif file. The
instructions on the wiki here:
http://trac.osgeo.org/gdal/wiki/FAQRaster#Howtocreateormodifyanimagecolortable
explain how to do it:
gdal_translate -of VRT your.tif your.vrt
gdal_translate your.vrt your_fixedup.tif
but doing this (without
I'm trying to geo-reference a .tif image, but the
corner coordinates don't change. I used gimp to get the
pixel and lat/lng of 4 points on the image. I converted
the lat/lng to the desired coordinates, then used this
command:
gdal_translate \
-a_srs epsg:3395 \
-gcp 1954 1085 -8682920.28
Hello!
I am trying to do something I probably shouldn't ...
I have about 30 geotiffs that tile the continental US (aviation sectional
charts). Each of them uses a slightly different projection -- LCC with
different standard parallels and origins for each chart.
Using gdalwarp, I converted eve
Why do the examples of ogrinfo not work? That is, the
example shows a coal_dep.gml with contents of:
0.000
0.000
2
2
7
110
110
78.531,50.694
Yet ogrinfo doesn't recognize it:
> ogrinfo coal_dep.gml
FAILURE:
Unable to open datasource `coal_dep.gml' with the following drivers.
...
On Sun, Jul 20, 2008 at 01:09:45PM +1000, [EMAIL PROTECTED] wrote:
> > Can someone point me to a python program that will generate
> > a shapefile from scratch?
> >
> > Given an extent, projection, and set of lat/lng to place
> > some markers or images, I would like a python (or c or c++)
> > progr
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