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abrego
2010 Jul 19
2
replacing elements of distance matrix
Hi! I am trying to implement non-bipartite matching. I have around 500 sites
which can be clustered by 10 regions. I am able to calculate pairwise
Mahalanobis distances between sites (thanks to another post in the forum).
However, I want to constrain my match to sites within the same region. Thus
I want to replace elements of the distance matrix with a high value, say
999999, for sites not of the
2009 Oct 21
1
combining multiple 3D graphs
Hi all!
I am a grad stat student and is fairly new in using R. I am doing a
regression tree in one of my problem sets. I have already identified the
cut-points (using Stata) for the regression. My problem is how to graph the
fitted values of z against the independent variables x and y. Basically, I
want to graph the following:
z=87.67 if 0<x<=29 & 0<y<=48
z=75 if