rowQ                 package:Biobase                 R Documentation

A function to compute empirical row quantiles.

Description:

     This function computes the requested quantile for each row of a
     matrix, or of an 'ExpressionSet'.

Usage:

     rowQ(imat, which)
     rowMax(imat)
     rowMin(imat)

Arguments:

    imat: Either a matrix or an 'ExpressionSet'.

   which: An integer indicating which order statistic should be
          returned.

Details:

     'rowMax', 'rowMin' and 'rowMedians' simply call 'rowQ' with the
     appropriate argument set. 

     The argument 'which' takes values between 1, for the minimum per
     row, and 'ncol(imat)', for the maximum per row.

Value:

     A vector of length equal to the number of rows of the input matrix
     containing the requested quantiles.

Author(s):

     R. Gentleman

See Also:

     'rowMedians'. 'rowMeans()' in 'colSums'().

Examples:

      data(sample.ExpressionSet)
      rowMin(sample.ExpressionSet)
      rowQ(sample.ExpressionSet, 4)

