Merge pull request #912 from weikang9009/master

adjust the formula for calculating local Moran's I in the docs
pysal · Feb 24, 2017 · 7d59a95 · 7d59a95
2 parents 67a2ebe + 7bca63f
commit 7d59a95
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/doc/source/users/tutorials/autocorrelation.rst b/doc/source/users/tutorials/autocorrelation.rst
@@ -676,7 +676,7 @@ PySAL implements local Moran's I as follows:
 
 .. math::
 
-        I_i =  \sum_j z_i w_{i,j} z_j / \sum_i z_i z_i
+        I_i =  \frac{(n-1) z_i \sum_j w_{i,j} z_j}{\sum_j z_j^2}
 
 which results in :math:`n` values of local spatial autocorrelation, 1 for each spatial unit. Continuing on with the St. Louis example, the LISA statistics are obtained with: