> I'd like to create a matrix with three columns so that each element is
> between 0 and 1 and each row always adds to 1. So, if in the same row the
You could start with expand.grid
m <- expand.grid(x1=0:100, x2=0:100) #Avoids comparing floats
m <- m[rowSums(m)<=100,] #Throw away the oversized ones
m <- cbind(m, x3=100-rowSums(m)) #Get the final column
m <- m/100 #Scale to [0,1]
table(rowSums(m))
S Ellison
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