From: "Jens Hainmueller" <jens_hainmueller at ksg05.harvard.edu>
To: "R-Help" <r-help at stat.math.ethz.ch>
Subject: [R] local average Date: Wed, 20 Apr 2005 23:43:41 -0400
Hello,
probably this isn't hard, but I can't get R to do this. Thanks for your
help!
Assume I have a matrix of two covariates:
n <- 1000
Y <- runif(n)
X <- runif(n,min=0,max=100)
data <- cbind(Y,X)
Now, I would like to compute the local average of Y for each X interval
0-1,
1-2, 2-3, ... 99-100. In other words, I would like to obtain 100 (local)
Ybars, one for each X interval with width 1.
Also, I would like to do the same but instead of local means of Y obtain
local medians of Y for each X interval.
Best,
Jens