[GRASS-user] v.dissolve - is this a bug?

[Richard Chirgwin]

Markus Neteler wrote:
> On Mon, Aug 16, 2010 at 10:14 AM, Nikos Alexandris
> <nikos.alexandris at felis.uni-freiburg.de> wrote:
>   
>> Richard Chirgwin:
>>     
> ...
>   
>>>> The killer is that it isn't reliable - sometimes it works, sometimes it
>>>> fails, and I can't tell why!
>>>>         
>>> Always on the same machine, the same binary and the same map?
>>>       
>> Markus, Richard,
>>
>> in the past I witnessed some strange randomness myself. Can't find the post
>> anymore (where Markus was referring to Heisenberg or someone's
>> uncertainty theory?).
>>     
>
> You mean "Heisenbug":
>
> On Tue, Sep 23, 2008 at 8:55 PM, Glynn Clements
> <glynn at gclements.plus.com> wrote:
> [ .. referring to memory corruption ...]
>   
>> It doesn't help that such bugs often fail to manifest if the program
>> is run under a debugger (colloquially referred to as a "Heisenbug", in
>> reference to the quantum mechanics principle that simply observing a
>> system can change its behaviour).
>>     
>
> So far we are far away from such a bug, also since v.dissolve is simply a
> script. First we need to obtain answers to above questions.
>
> Markus
>
>   

Markus,

I will try to get it to reproduce, and post the results here.

Cheers,
Richard Chirgwin