[GRASS-user] v.centroids question

[John C. Tull]

On Mar 19, 2008, at 11:08 AM, Nikos Alexandris wrote:
>> John,
>>
>> maybe you could try
>>
>> v.clean with type=line,boundary,centroid,area tool=snap,break,rmdupl
>> thresh=.01
>>
>> Not sure but I suspect the "break" tool is what you might need.
>
> And then of course the rest with v.centroids
>

Nikos,

Thanks for the suggestion. I seem to be getting closer. I ran v.clean  
as you suggested, then ran v.clean with tool=chdangle and a really big  
threshold value. Now many more areas are available, but there are  
still quite a few apparently closed polygons that are not being picked  
up as areas. I'm playing around with different thresholds for snap and  
various permutations of the various operations.

Thanks,
John