[GRASS-user] v.net.iso problem or bug?

[Pierluigi De Rosa]

Hello,
my GRASS version is GRASS 6.4.0 (2010) (from launchpad repo) on Ubuntu
10.10
At this address http://dl.dropbox.com/u/362123/testing_location.tar.gz
you can  download my testing location.
Inside the mapset you have only one vector line outputted from v.net
Try to run this command:
v.net.iso --overwrite input=streams_net output=myriver type=line
nlayer=2 ccats=1 costs=100,300,2000
I have this error:
Generating isolines...
*** glibc detected *** v.net.iso: malloc(): memory corruption:
0x092cc3e8 ***
======= Backtrace: =========

Thanks
Pierluigi

Il giorno ven, 08/04/2011 alle 16.34 +0300, Maris Nartiss ha scritto:
> Hello,
> first - GRASS version, OS, Arch?
> second - have tested with GRASS 7?
> third - if dataset is small, TGZ it and drop somewhere for testing
> (opening an issue in trac would also be fine).
> 
> I have dataset that fails to work with salesman in 6.4.1. I had no
> time to make tests with 6.5 and 7. Issue is different - it reports
> some nodes to be unreachable after extensive v.clean and v.digit
> cleanup. Migh be interesting to collect sample data that causes
> v.net.* to fail to try isolate root cause(s) of such failures.
> 
> Maris.
> 
> 
> 2011/4/8, Pierluigi De Rosa <pierluigi.derosa at gfosservices.it>:
> > Dear grass users
> >
> > I have a strange problem using v.net.iso
> > I'm doing an analysis on a river network in a very easy system ( I have
> > one main channel and two tributaries) in order to calculate distances
> > from outlet.
> > i'm running:
> > v.net.iso --overwrite input=streams_net output=myriver type=line
> > nlayer=2 ccats=1 costs=100,500,5000
> > but i have this error:
> > *** glibc detected *** v.net.iso: realloc(): invalid next size:
> > 0x09c147b8 ***
> > ======= Backtrace: =========
> > /lib/libc.so.6(+0x6c501)[0x17d501]
> > /lib/libc.so.6(+0x71c6d)[0x182c6d]
> >
> > and so on
> >
> > few months ago an other user have the same problem but it seems he
> > didn't go to a solution.
> > If I change the outlet point sometimes could happens v.net.iso work!
> > So sometimes it works sometimes not...
> > Is this a bug?
> > Thanks
> > Pierluigi
> >
> >
> > _______________________________________________
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> > grass-user at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/grass-user
> >