# colSummarize: Summarize the column of matrices In preprocessCore: A collection of pre-processing functions

## Description

Compute column wise summary values of a matrix.

## Usage

 ``` 1 2 3 4 5 6 7 8 9 10``` ```colSummarizeAvg(y) colSummarizeAvgLog(y) colSummarizeBiweight(y) colSummarizeBiweightLog(y) colSummarizeLogAvg(y) colSummarizeLogMedian(y) colSummarizeMedian(y) colSummarizeMedianLog(y) colSummarizeMedianpolish(y) colSummarizeMedianpolishLog(y) ```

## Arguments

 `y` A numeric matrix

## Details

This groups of functions summarize the columns of a given matrices.

• `colSummarizeAvg`Take means in column-wise manner

• `colSummarizeAvgLog``log2` transform the data and then take means in column-wise manner

• `colSummarizeBiweight`Summarize each column using a one step Tukey Biweight procedure

• `colSummarizeBiweightLog``log2` transform the data and then summarize each column using a one step Tuke Biweight procedure

• `colSummarizeLogAvg`Compute the mean of each column and then `log2` transform it

• `colSummarizeLogMedian`Compute the median of each column and then `log2` transform it

• `colSummarizeMedian`Compute the median of each column

• `colSummarizeMedianLog``log2` transform the data and then summarize each column using the median

• `colSummarizeMedianpolish`Use the median polish to summarize each column, by also using a row effect (not returned)

• `colSummarizeMedianpolishLog``log2` transform the data and then use the median polish to summarize each column, by also using a row effect (not returned)

## Value

A list with following items:

 `Estimates` Summary values for each column. `StdErrors` Standard error estimates.

## Author(s)

B. M. Bolstad [email protected]

## Examples

 ``` 1 2 3 4 5 6 7 8 9 10 11 12``` ```y <- matrix(10+rnorm(100),20,5) colSummarizeAvg(y) colSummarizeAvgLog(y) colSummarizeBiweight(y) colSummarizeBiweightLog(y) colSummarizeLogAvg(y) colSummarizeLogMedian(y) colSummarizeMedian(y) colSummarizeMedianLog(y) colSummarizeMedianpolish(y) colSummarizeMedianpolishLog(y) ```

preprocessCore documentation built on Nov. 17, 2017, 12:25 p.m.