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How to interpret the results of the Corridor tool

Question asked by Carina93 on Jul 13, 2016
Latest reply on Jul 15, 2016 by xander_bakker

Hello everyone,


sorry, I feel like I'm flooding this forum with questions lately, but I am always getting such excellent help, which is great!


My question now concerns the output of the Corridor tool (see picture below). It is created using two inputs of the Cost Distance tool for two different sources - in this case habitat for giant pandas North of Highway 303 and habitat South of the highway. Now I was wondering:


1.) Why do I get so many NoData cells? Is that because the cost there to connect the two sources would be too great? (but too great compared to what? The maximum dispersal limit that I specified when using Cost Distance?) --> I am actually quite happy that there is so much NoData, because IF it really means travel for pandas is too "costly" there, then I have the area for possible corridor establishment narrowed down pretty neatly. I just want to make sure I am not drawing incorrect conclusions.


2.) The higher the value of a cell the higher the cost for a panda to travel through this cell from one habitat to the next. Is that correct?

ESRI Question.jpg


Many thanks in advance!