[GRASS-user] v.overlay Limited In wxPython GUI

[Michael Barton]

On Feb 23, 2010, at 12:37 PM, grass-user-request at lists.osgeo.org wrote:

> Date: Tue, 23 Feb 2010 09:46:13 -0800 (PST)
> From: Rich Shepard <rshepard at appl-ecosys.com>
> Subject: [GRASS-user] v.overlay Limited In wxPython GUI
> To: grass-users at lists.osgeo.org
> Message-ID: <alpine.LNX.2.00.1002230942540.6523 at salmo.appl-ecosys.com>
> Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII
> 
>   I tried to extract the streams within a specific drainage basin using the
> wxPython GUI and the v.overlay function. It fails because it assumes the
> operation is 'or' (set UNION) and does not permit the user to select a
> different operator.
> 
>   To write only those streams within the named basin to an output file
> requires the set operator INTERSECT, or 'and.' I did not see anywhere on the
> GUI window tabs where the operator could be selected. If I missed it, please
> point that out to me. Else, consider adding a widget to select the operator.
> 
> Rich
> 

I just looked at this in GRASS 7 and there is a pull down choice control for "operator defines features written to output vector map:" The pull-down lists and, or, not, and xor. Is this missing on GRASS 6.4?

Michael