[GRASSLIST:4969] =?gb2312?B?dG8gYWRkIGNvc3QgaW5mb21hdGlvbiB0byBhIG1hcA==?=

É£Íú sangwang2002 at 163.com
Fri Nov 15 20:21:48 EST 2002

I'm new to GRASS. I want to define manually the cost information(speed) according to the terrain types(hard bed desert, grass land, roads, etc) and process it with 'r.cost'. What would the process be like? It seems to me that a cost surface would be added to the map, and then run r.cost. But I don't know the details. Thank you.

Wang Sang
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