Re: [R-sig-Geo] problems in shortestPath()?

2012-03-08 Thread Bastien.Ferland-Raymond
Hello Melanie, It's really hard to tell what your problem is with no error message or reproducible example. However here some info that may help and some trick to help you figure out the problem First, gdistance build a transition matrix from a CONDUCTANCE matrix which is not a COST matrix li

[R-sig-Geo] problems in shortestPath()?

2012-03-07 Thread Melanie Shapiera
Hi all I am trying to connect bivariate location points together to form a route. My points refer to fish locations, and so I need paths that only pass through water, and not the surrounding land. Basically, I need to do multiple least cost path analyses and join them altogether. I would like to d