colon {dprep} | R Documentation

## The Alon et al.'s colon dataset

### Description

This is the Alon et al.'s Colon cancer dataset which contains information of 62 samples on 2000 genes. The samples belong to tumor and normal colon tissues.

### Usage

    data(colon)

### Format

A data frame with 62 observations on 2000 genes. An additional column contains the tissues classes.

### Source

The data is available at:

- http://microarray.princeton.edu/oncology/

### References

Alon U, Barkai N, Notterman DA, Gish, K, Ybarra, S. Mack, D and Levine, AJ. (1999). Broad patterns of gene expression revealed by clustering analysis of tumor and normal colon tissues probed by oligonucleotide arrays. Proc. Natl. Acad. Sci. USA. 96. p. 6745-6750.

### Examples

    #Detecting the top 5 outliers in class-2 using the LOF algorithm
    data(colon)
    colon2.lof=maxlof(colon[colon[,2001]==2,],"colon-class2")
    colon2.lof[order(colon2.lof,decreasing=TRUE)][1:5]

[Package dprep version 1.0 Index]