[Qgis-user] Selecting rasters with vector layer

[Eric Goddard]

Yes, you should be able to choose ECW from the files of type drop down in
the output file selection dialog and select ECW.

Eric


On Mon, Mar 3, 2014 at 4:48 PM, Asher Kamiraze <asher.kamiraze at gmail.com>wrote:

> Thanks Eric, sounds really good. Is there a way to save the resulting file
> (clipped) as an ECW file? I need to process it later with a 3rd party
> software.
>
> Regards
>
>
> 2014-03-03 23:26 GMT+01:00 Eric Goddard <egoddard1010 at gmail.com>:
>
> Hi asher, if you go to raster -> miscellaneous, there is a menu entry
>> called build virtual raster catalog. You can use that to virtually mosaic
>> all of your ECW files. This tool creates a new file you can load in as a
>> raster that references all of the individual ECW files to display them
>> seamlessly in qgis without having to spend the time to actually mosaic all
>> of them together. Load the resulting vrt file into qgis using add raster
>> and clip the vrt to your polygon layer using raster -> extraction ->
>> clipper.
>>
>> Eric
>> On Mar 3, 2014 3:53 PM, "Asher Kamiraze" <asher.kamiraze at gmail.com>
>> wrote:
>>
>>> Hi all,
>>>
>>> I have a set of more than 200 ecw rasters that I can easily load in
>>> QGIS. I also have a vector polygon layer which bounds an area covering a
>>> part of the area covered by the whole set of rasters. What I would like to
>>> do is to extract only, the raster which are intersected by the vector
>>> boundary. As a final goal, I would like to only mosaic thoses images. I did
>>> not found a way to easily do this in QGIS. Any idea on how to achieve this?
>>>
>>> As a workaround, I have opened only the raster intersecting the vector,
>>> and would like to mosaic them. However, it does not seem to be a function
>>> in QGIS ready to mosaic all opened (or selected) rasters. Any idea on how
>>> to automate the process?
>>>
>>> Hope you could help
>>>
>>> Regards
>>>
>>> _______________________________________________
>>> Qgis-user mailing list
>>> Qgis-user at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20140303/faa0642f/attachment.html>