[Qgis-user] cut several segments into a polygon

Bernhard Ströbl bernhard.stroebl at jena.de
Tue Jul 9 06:47:16 PDT 2013


Hi Jake,

I had a plugin in preparation that amongst others does exactly what you 
want: within an editing session cut out from polygons in editable theme 
with selected polygons from another theme.
The plugin is called DigitizingTools and is planned to contain more 
tools in the future. I uploaded it to the plugin repository just now, 
feel free to give it a try and report any problems.
It is marked as experimental (because it is not well tested right now) 
and only works with current master (aka QGIS 2).

Bernhard

Am 09.07.2013 15:11, schrieb Randal Hale:
> Hey Jake,
>
> Here's how I typically add a cut to an existing stand (or depending on
> who you stand in front of - regeneration cut or clear cut).
>
> 1. Select all of your clearcuts in the stand.
> 2. IN the QGIS menu go to Vector -> geoprocessing -> difference
> 3. Both the input and the difference layer will be the name of your
> shapefile with the stand in it.
> 4. Uncheck "Use only selected features" under Input Vector Layer
> 5. Make sure "Use only selected features" is checked under difference layer
> 6. Create an output shapefile and run.
>
> You should have a new stand with multiple "holes" cut into it so you get
> the right acreage.
>
> Randy
>
>
>
>
>
> On Tue, Jul 9, 2013 at 7:42 AM, Jake Maier <j.m at jmforestry.com
> <mailto:j.m at jmforestry.com>> wrote:
>
>     How can I create a polygon with several areas cut out. The cut out
>     areas are all contained in polygons of the same shape file.____
>
>     I have a large forest stand and contained in it are many smaller
>     stands. ____
>
>     Thank you for your help____
>
>     Jake____
>
>     __ __
>
>
>     _______________________________________________
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>
>
>
>
> --
> Randal Hale, GISP
> North River Geographic Systems, Inc
> http://www.northrivergeographic.com
> 423.653.3611 rjhale at northrivergeographic.com
> <mailto:rjhale at northrivergeographic.com>
> twitter:rjhale
> http://about.me/rjhale
>
>


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