search for: extractedcolumnvector

Displaying 1 result from an estimated 1 matches for "extractedcolumnvector".

2011 Jul 01
1
how to apply several math/logic operations on columns/rows of a matrix
...following task: assume there is a 3x3 matrix: 1 2 4 4 5 3 1 3 4 How do I find - for each column separately - the position of the column's minimum without using loop commands, i.e.: I could extract each column in a loop and use something like: for (loopColumn in 1 : 3){ extractedColumnVector = myMatrix[, loopColumn] position = which(extractedColumnVector == min (extractedColumnVector ) ) print(position) } I think that there should be something simpler out there to handle these kinds of tasks (maybe there is and I just don't know but I checked several R books and could not fin...