Select a random subset of rows out of matrix
Hi, You could try something like this: nrow = 1000 ncol = 10 nosample = 50 m = matrix(runif(10000), nrow = nrow, ncol = ncol) # Randomly select 50 row numbers and extract the data m_subset = m[sample(1:nrow, size = nosample),] cheers, Paul
Haenlein.Michael wrote:
Dear all, I have a large dataset (N=100,000 with 89 variables per subject). This dataset is stored in a 100.000 x 89 matrix where each row describes one individual and each column one variable. What is the easiest way of selecting a subset of let's say 1.000 individuals out of that whole matrix? Thanks, Michael Michael Haenlein Associate Professor of Marketing ESCP-EAP European School of Management Paris, France [[alternative HTML version deleted]]
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