There is no reason for me not to use 7, I will give it a try. I thought 6
might be more stable so I started with that.
-Thayer
From: Markus Neteler <[email protected]>
To: Thayer Young <[email protected]>
Cc: GRASS LIST <[email protected]>
Sent: Sunday, January 18, 2015 5:23 PM
Subject: Re: [GRASS-user] v.select error: point array must contain 0 or >1
elements
On Sat, Jan 17, 2015 at 10:12 PM, Thayer Young <[email protected]> wrote:
>
> I have two shapefiles that I imported into GRASS 6.4.5 using v.in.ogr. One
> is a polygon file of building footprints. The second is a polyline of the
> pavement edges of urban streets. I am trying to convert this into street
> area. I used v.clean, v.type (to switch from line to boundaries), and
> v.centroids. This conversion process gives me street areas but also creates
> doughnut holes corresponding to the area inside of a city block outlined by
> the streets. For the most part the doughnut holes contain buildings, so I am
> trying to use v.select to select the areas that do not contain buildings. I
> have not been able to get anything besides "overlap" to work. Overlap is not
> good enough though because many of the buildings have shared nodes with the
> streets, for example where a driveway runs along one side of a house. I
> checked and my version of GRASS was compiled with the following GEOS details:
>
>--with-geos=/Library/Frameworks/GEOS.framework/Versions/3/unix/bin/geos-config
>
> Below is an example of an error that I am getting when I try anything besides
> overlap:
>
> v.select --overwrite ainput=EdgePav_cent@PERMANENT binput=Bldg@PERMANENT
> output=Pav_sel operator=contains
> WARNING: Vector map <Pav_sel> already exists and will be overwritten
> Building spatial index...
> Processing features...
> ERROR: IllegalArgumentException: point array must contain 0 or >1 elements
In the past few days Markus Metz has fixed some topology issues in
GRASS GIS 7 (potentially to be backported while that's a big task).
Do you have any chance to try this in GRASS 7, downloading a version
newer than RC1 (fixes will go into RC2)?
markusN
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