| chowdary {ICGE} | R Documentation |
Chowdary Database
Description
The original authors compared pairs of snap-frozen and RNAlater preservative-suspended tissue from lymph node-negative breast tumors (B) and Dukes' B colon tumors (C). The actual data set, by de Souto et. al (2008), is build with purpose of separating B from C.
Usage
data(chowdary)Format
Data frame with 183 rows and 104 columns.
Source
Original source from ‘National Center for Biotechnology Information’ from the United States of America, query GSE3726.
References
de Souto MCP, Costa IG, de Araujo DSA, Ludermir TB, and Schliep A (2008). Clustering Cancer Gene Expression Data: a Comparative Study. BMC Bioinformatics, 8, 497–511.
Chowdary D, Lathrop J, Skelton J, Curtin K, Briggs T, Zhang Y, Yu J, Wang X, and Mazumder A (2006). Prognostic gene expression signatures can be measured in tissues collected in RNAlater preservative. Journal Molecular Diagnosis, 8, 31–39.
Examples
data(chowdary)
tumor <- as.factor(as.matrix(chowdary[1,]))
x <- as.matrix(chowdary[-1,])
mode(x) <- "numeric"
s <- sample(row.names(x),1)
boxplot( x[s,] ~ tumor , ylab=s)