[GRASS-user] thresh in v.select?

[achim]

!!! I solved the problem by a workaround:
-> I deleted all lines, whose connected nodes both touch the same area

But the problem itself still exists.

The Problem is:
-I used a line, which crosses an area, to make the area bigger
-Then I tried to delete those lines, crossing and touching the area

-> crossing is no problem, but touching is a problem, I guess because of
in-consistences of roundings

I add an picture, explaining this and I hereby hint at my following mail
concerning with serious problems with rounding-snapping I have.





Markus Neteler schrieb:
> On Thu, Sep 24, 2009 at 2:07 PM, achim <ak7 at jupiter.uni-freiburg.de> wrote:
>> Hi all,
>>
>> I am using grass6.5, so I can use some v.select options.
>>
>> Now I have a general problem with objects that are very,
>> very close to each other: only some digits far behind the
>> comma are different.
>>
>> Is there a way to define the accuracy?
> 
> The code uses Vect_select_lines_by_box():
> http://download.osgeo.org/grass/grass6_progman/vector_2Vlib_2select_8c.html#b1754f710ac2001a10af2ff724d92ff5
> 
> So it takes what it finds. What is the exact problem? That
> it takes too many? A simple example would be useful.
> 
> Markus
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