Dear All,
any thoughts on how I can do the following:
let us say we have:
a <-c(2,4,16,28,48)
b <-c(10,4,2,0.4,0.03)
d <-cbind(a,b)
what I would like to do is to extract values of column b in the matrix based on
the corresponding values of column a. For example: I would like to extract all
b values that have a corresponding a value that is less than 24 into a numeric
vector, so let us say we name this new vector f, then the results should look
like:
f <-c(10,4,2)
as allways your help is greatly appreciated,
Andras
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