About the "distance = NA" issue, please see if this comment helps:
https://lists.gking.harvard.edu/pipermail/matchit/2011-January/000174.html
Furthermore, the Mahalanobis NA distance values are hard-wired in the code,
file matchit.R:
## no distance for full mahalanobis matching
if(fn1=="di
Dear All,
I am trying to use simulation to test mahalanobis distance matching method.
Somehow I do not think Matchit is giving me what I want
Below is the code:
n<-100
x1_contr<-runif(n,0,5)
x2_contr<-runif(n,0,5)
x_contr<-cbind(x1=x1_contr,x2=x2_contr)
x1_treat<-runif(n,1,6)
x2_treat<-runif(n,1,
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