I've been reading more, and I realize now that it is possible to perform distance calculations with GRASS. Cane someone give me a sense of how long it will take, though? My dataset consists of 2000 young girls with multiple observations over time (ie, 10 years of 2000 observations on the same girl). I have to calculate, therefore, 20,000 separate distances. How long will this probably take?
I've been reading more, and I realize now that it is possible to
perform distance calculations with GRASS. Cane someone give me a
sense of how long it will take, though?
Computers are very fast these days, I wouldn't worry about time too much
unless you want to use r.cost or r.walk in a loop.
Hamish