[GRASS-dev] patch for v.nn.py
mlennert at club.worldonline.be
Sat Sep 14 09:11:05 PDT 2013
I've attached a patch to your very useful v.nn.py addon script. The
patch provides the following:
- a change of option names from input1,2 to 'from' and 'to'
- the possibility to provide a vector map with polygons giving the
contours of the study area for which to calculate the nearest neighbor
coefficient - the script just gets the total of all areas and all
perimeters in the given map
- the possibility to provide numerical values for area and perimeter
Even though some people argue that the absolute value of the coefficient
does not mean much and that the exact size of the study area does not
have an influence on the relative values of the coefficient, I think it
is a plus to have the possibility to circumscribe the area. Especially
since in its current state the module gets the area and perimenter from
the current region and as this is a vector module most people won't even
think about region settings. (Running the module in the default n=1 s=0
w=0 e=1 region gives very weird coefficient values.
Up to you to decide whether you want to add this into your script.
BTW: the script works perfectly in grass7 as well.
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