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Computes ranks of values in a matrix. Ranks are computed independently for each column. The rank is a value between 0 and 1. The lowest value in a given column group gets rank 0/(n-1)=0, the next gets 1/(n-1) and the highest value gets rank (n-1)/(n-1) = 1. Here, n is the number of cells in the current column having a non-missing value. Missing values (NA) are excluded from rank computation.

Version 1.0
Bundle tools
Categories Preprocessing
Authors Kristian Ovaska (kristian.ovaska@helsinki.fi)
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Requires R
Source files component.xml MatrixRank.r
Usage Example with default values


Name Type Mandatory Description
in Matrix Mandatory Input matrix.


Name Type Description
out Matrix Ranks of the input matrix as values between 0 and 1. The number and names of rows matches the input matrix. The columns are given with the columns parameter. The result contains a missing value (NA) in those places where the input also contains NA.


Name Type Default Description
columns string "*" Columns in matrix that are included in the output. The special value * includes all columns.

Test cases

Test case Parameters IN
case1 (missing) in out

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