Hello

I have a simple question... Can GIS calculate a path or road from point to point, only if I have TIN's raster or raster of slope... ?? I've searched on google.. but now I think I can calculate routes only if I have a shapefile with polygons (roads). For example, I have a forest, and someone wants to cut wood from point B and the deposit is in point A. And I have DEM, TIN, I've calculated slope, hillshade.. Can GIS calculate a route/path/road conditioned by slope ? And if it can.. How cand I do that ?

I have a simple question... Can GIS calculate a path or road from point to point, only if I have TIN's raster or raster of slope... ?? I've searched on google.. but now I think I can calculate routes only if I have a shapefile with polygons (roads). For example, I have a forest, and someone wants to cut wood from point B and the deposit is in point A. And I have DEM, TIN, I've calculated slope, hillshade.. Can GIS calculate a route/path/road conditioned by slope ? And if it can.. How cand I do that ?

The key to the whole process is to generate a cost raster to define where the "easy" and "difficult" travel paths are, for example, you can reclassify slope (say, using the Reclassify tool) into cost values (high cost -> you can't build a road there). For example: slope 0 to 2: cost=0; slope 2 to 5: cost = 1, slope >5: cost = 100.

Here are some sections in the online help that can get you started.

Arc 10 help: Creating the least cost path

Arc 9.3.1 help: Least cost path and least cost corridor