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Generating Random Transects of Same Length

Pierre Racine 
Hi,

Anybody knows a tool or algorythm (R, GRASS or ArcGIS Script, anything!)
to generate a number of random same length transects (e.g. 1000) within
the extent of a given polygon or raster?

I can't just create random point in the extent and joint hem two by two.
This would result in different length transects.

A simple algorythm would be:

-create a transect of a certain length from a random point and a random
angle
-reject any transect having an end falling outside the given extent

But there is chances that this takes years to run...

Thanks,

Pierre
Pierre.racine at sbf.ulaval.ca

Thread (5 messages)

Pierre Racine Generating Random Transects of Same Length Feb 12 Barry Rowlingson Generating Random Transects of Same Length Feb 12 Marcelino de la Cruz Generating Random Transects of Same Length Feb 12 Barry Rowlingson Generating Random Transects of Same Length Feb 12 Philippi, Tom Generating Random Transects of Same Length Feb 12