Hi

I have created flowpaths for a grid in GRASS, and have to do some analysis
per grid cell, i.e. per flowline.

Is there a way of identifying a line by its starting point?
I would like to provide the cell / centre of a cell and get the flowline
from this point?
A grass solution would be as fine as an R solution.

I know I could create them separately, but this calculation is part of a
simulation which is repeated several thousand times, and the grid is quite
big, wherefore the individual storage of the flowlines is not an option
here.

Thanks,

Rainer

-- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology,
UCT), Dipl. Phys. (Germany)

Centre of Excellence for Invasion Biology
Stellenbosch University
South Africa

Tel :       +33 - (0)9 53 10 27 44
Cell:       +33 - (0)6 85 62 59 98
Fax (F):       +33 - (0)9 58 10 27 44

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email:      Rainer@krugs.de

Skype:      RMkrug

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