They are links between tables. Usually, between the attribute table of a
feature class and a simple (non-spatial, as Mike said) table. But you
can relate any kind of attribute tables.
-marius
On Thu, 2011-04-28 at 14:30 -0700, Paul Ramsey wrote:
> Are they tables or links between tables? I can s
In QGIS you can use Raster Calculator to multiply the rasters.
-marius
On Thu, 2011-04-28 at 00:30 -0700, canduc17 wrote:
> Hi everyone.
>
> Is there a way to crop a GEOTiff image using a Mask of the same dimension?
>
> For example, a mask with a filled circle: every pixel inside the circle is
FWIW, the error code -2147467259 is probably a Microsoft HRESULT. In hex, it
is 0x80004005, which is a generic "access is denied" error. Not that this is
much of a clue about what is going on. You could check for some kind of
permissions or access problem...
Jason
-Original Message-
From:
Are they tables or links between tables? I can see this is going to
be a hard project to do without ArcGIS handy :)
P.
On Thu, Apr 28, 2011 at 10:26 AM, Smith, Michael ERDC-CRREL-NH
wrote:
> Relations are joins to non-spatial tables containing domain values etc. They
> are relational tables.
>
Relations are joins to non-spatial tables containing domain values etc. They
are relational tables.
Mike
--
Michael Smith
Remote Sensing/GIS Center
US Army Corps of Engineers
On 4/28/11 1:19 PM, "Even Rouault" wrote:
> Le jeudi 28 avril 2011 02:11:30, Paul Ramsey a écrit :
>>
>> I assume
Le jeudi 28 avril 2011 02:11:30, Paul Ramsey a écrit :
>
> I assume the failures are relationships we don't handle yet (or ever
> and will need to be silenced).
>
Not sure what those relations things are.
> There is a test file in the FGDB API itself, and it fails to open
> entirely, which seem
Le jeudi 28 avril 2011 17:49:48, Matt Wilkie a écrit :
> > Worked for me using the following:
> >
> > #Change black to white
> > gdalbuildvrt -srcnodata 0 -vrtnodata 255 to-be-decollared.vrt
> > to-be-decollared.tif
> > #Run nearblack -white
> > nearblack -white -o decollared.tif to-be-deco
You could run gdal_polygonize on the mask geotiff and then use the output
vector with gdal_rasterize. That's the only way I can think of without
writing a python script to do the pixel comparisons.
Jamie
On Thu, Apr 28, 2011 at 2:30 AM, canduc17 wrote:
> I think gdal merge is the easier way.
>
> Worked for me using the following:
>
> #Change black to white
> gdalbuildvrt -srcnodata 0 -vrtnodata 255 to-be-decollared.vrt
> to-be-decollared.tif
> #Run nearblack -white
> nearblack -white -o decollared.tif to-be-decollared.vrt
Luke, once again I thank you. :)
matt wilkie
-
On 11-04-27 02:42 PM, Mark Warren wrote:
So before we go down this route too far (since a lot of changes may be
needed to the code) - does anyone think that this is a feasible idea or
have any other suggestions (other than using a GIS :) )?
Mark,
Honestly, I think it would be better to impleme
Ok.
But if I have a separate shapefile (.shp) and a GEOTiff image, which command
line tool can I use to obtain the first image of your howto?
--
View this message in context:
http://osgeo-org.1803224.n2.nabble.com/Cropping-raster-by-vector-files-tp5271977p6312752.html
Sent from the GDAL - Dev ma
I think gdal merge is the easier way.
But with a command like this:
gdal_merge.py -of GTiff -separate -o cropped.tif orig.tif mask.tif
I obtainn a GEOTiff with two bands: the first is the original image and the
second is the mask.
This is not what I want.
I would like to obtain a single band GEO
Alessandro,
You can combine the tiff and the mask using GDAL's VRT format or by using
the -separate option in gdal_merge.py script. The extra band should be set
as a nodata mask or alpha band.
http://www.gdal.org/gdal_vrttut.html
http://www.gdal.org/gdalbuildvrt.html
http://www.gdal.org/gdal_mer
Hi everyone.
Is there a way to crop a GEOTiff image using a Mask of the same dimension?
For example, a mask with a filled circle: every pixel inside the circle is 1
and the others are 0.
I would like to obtain a new GEOTiff with only the pixel inside the circle
visible and the other set to 0.
Is
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