[R] Three values that add to the same number by 0.01 steps
smartpink111 at yahoo.com
Tue Jan 28 18:04:31 CET 2014
May be this helps:
mat1 <- matrix(sample(seq(0,1,by=0.01),360000,replace=TRUE),ncol=3)
mat2 <- mat1[sprintf("%.2f",rowSums(mat1))=="1.00",]
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 columns are x1, x2, and x3 and x1 =1, then x2 = 0 and x3 =
0. Or if x1 = .03, then x2 = .97 and x3 = 0. Or... x1 = .05, x2 = .01,
x3 = .94.
Basically so it accounts for all values of x1,x2,x3 that add up to 1 with the sequence by 0.01.
I tried a nested seq (if that is even possible), but that didn't work.
Is there a way to do this? Perhaps a package that I don't know about?
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