[Qgis-user] Clip from Rectangle defined by Coordinates

[murali.krishna.gurram]

Hi Andreas,
I tried the following option and it was successful.

First construct a grid with the following option by using the required max,
min lat-long values
TOOLS - RESEARCH TOOLS - VECTOR GRID

and you have to specified the grid spacing (otherwise, it will not take).

it will create a grid for you according to the specified coordinate extent,
but later we need to dissolve the remaining grids inside the boundingbox.
And that's it, your BoundingBox polygon is ready which can be used for any
clipping operations.

All the best!

Murali Krishna Gurram



murali.krishna.gurram wrote:
> 
> Dear Mr. Andreas,
> 
> In fact I have been searching for the GUI with same functionality "Custom
> BoundingBox" for the last couple of days as it is very important for my
> work. 
> 
> QGIS has a built-in tool available for this in TOOLS - RESEARCH TOOLS -
> VECTOR GRID
> 
> But, I found it is not at all working normally (when you start the process
> it will continuosly run without no end). I think there is a bug with this
> tool which needs to be fixed immediately (and lot many with other
> options).
> 
> It is a very common problem everyone used to face regularly, but still
> there is no solution for this so far.
> 
> I found one 'libspatialindex-1.4.0-win32' but still unable to use the same
> plugin with QGIS 1.3.0.
> 
> Please let me know if you arrived at any solution for the customized
> boundingbox problem. 
> 
> Regards,
> 
> Murali krishna Gurram
> 
> 
> Andreas Neumann-4 wrote:
>> 
>> Hi,
>> 
>> This is perhaps more a question towards Carson and others dealing with
>> fTools.
>> 
>> Regarding clipping: one common scenario is that one wants to clip a
>> rectangular area based on corner coordinates, e.g. lower/left and
>> upper/right corner.
>> 
>> Currently, one would have to generate a file or table physically
>> containing the clipping rectangle. For this scenario it would be more
>> convenient if the clipping rectangle could be defined by coordinates,
>> without having to generate a dataset first.
>> 
>> Do you think this could be implemented in fTools for convenience? Perhaps
>> one could use the memory provider for this purpose and add some GUI for
>> entering coordinates for the corners of the rectangle.
>> 
>> What do you think? Would this be of general interest?
>> 
>> Andreas
>> 
>> -- 
>> Andreas Neumann
>> http://www.carto.net/neumann/
>> http://www.svgopen.org/
>> 
>> _______________________________________________
>> Qgis-user mailing list
>> Qgis-user at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>> 
>> 
> 
> 

-- 
View this message in context: http://n2.nabble.com/Clip-from-Rectangle-defined-by-Coordinates-tp4125730p4197576.html
Sent from the qgis-user mailing list archive at Nabble.com.