Quick question: how can I reverse the order of the rows in a matrix? i.e. make the last row first and the first row last, etc.?
reverse order of matrix rows
3 messages · Jake Michaelson, Jean Eid, Adaikalavan Ramasamy
sapply(nrow(matrix):1, function(x) matrix[x,])
On Mon, 8 Aug 2005, Jake wrote:
Quick question: how can I reverse the order of the rows in a matrix? i.e. make the last row first and the first row last, etc.?
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How about simply mat <- mat[ nrow(mat):1, ] Regards, Adai
On Mon, 2005-08-08 at 19:44 -0400, Jean Eid wrote:
sapply(nrow(matrix):1, function(x) matrix[x,]) On Mon, 8 Aug 2005, Jake wrote:
Quick question: how can I reverse the order of the rows in a matrix? i.e. make the last row first and the first row last, etc.?
______________________________________________ R-help at stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
______________________________________________ R-help at stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html