I build corridors between core forests using the Linkage mapper (https://circuitscape.org/linkagemapper/). For inputs i used core forest (Polygon file) and resistance raster as 1 (uniform resistance with value 1). Euclidean tool was used for network adjacency method. I also limited the maximum distance between core forests for corridors as 20 Km meaning forests farther than 20 Km will have no corrdiors. With these specifications, the tool was run and the results for corridors were obtained.
But i have difficulty understanding the final raster values of the corridors obtained in corridor.gdb.
What are those values in the raster file and how did the tool reach to the result?
I am attaching the screen shot of the output file with corridor raster along with LCP(least cost path marked as red).
The values of corridors are bit strange and why is it so?
Could someone help me in explaining the image?
The LM2903_corrdiors is the final output image with values called the normalised least cost corrdior value which is equal to Cost weighted distance from core forest (a) + Cost weighted distance from core forest (b)-Least cost distance when moved along the ideal path. (I made the symbology such that values greater than 5000 m gets no colour). I found this equation from the guidelines which i didn't understand completely. The marked red line is the least cost path and takes a strange shape even when the resistance is uniform.
Why is it so?