[GRASS-dev] v.build: why is attaching islands taking so long?

[Maciej Sieczka]

Hi

Can anybody possibly explain why does the "Attaching islands..." in
v.build take so very long compared to other operations?

For example: I have a big vector map consisted only of lines, more than
180 000 of them. v.build on this dataset takes about 20 seconds. After
converting lines into boundaries (v.type), v.build on that new vector
map made of boundaries only takes half a day, with 99% of processing
time dedicated to "Attaching islands...". Is that normal? Any
improvements possible?

Maciek

-- 
Maciej Sieczka
www.sieczka.org