DNA Microarray Data of Lung Tumors
DNA Microarray data of 73 lung tissues including 67 lung tumors. There are 916 observations of genes for each lung tissue.
data(lung)
data frame of size (916, 73).
This dataset has been modified from original data. Each one
observation of duplicate genes has been removed. See source
section in this help for original data source.
Garber, M. E. et al. (2001) "Diversity of gene expression in adenocarcinoma of the lung", Proceedings of the National Academy of Sciences, 98, 13784-13789.
## Reading the data data(lung) ## Multiscale Bootstrap Resampling lung.pv <- pvclust(lung, nboot=100) ## CAUTION: nboot=100 may be too small for actual use. ## We suggest nboot=1000 or larger. ## plot/print functions will be useful for diagnostics. ## Plot the result plot(lung.pv, cex=0.8, cex.pv=0.7) ask.bak <- par()$ask par(ask=TRUE) pvrect(lung.pv, alpha=0.9) msplot(lung.pv, edges=c(51,62,68,71)) par(ask=ask.bak) ## Print a cluster with high p-value lung.pp <- pvpick(lung.pv, alpha=0.9) lung.pp$clusters[[2]] ## Print its edge number lung.pp$edges[2] ## We recommend parallel computing for large dataset as this one ## Not run: library(snow) cl <- makeCluster(10, type="MPI") lung.pv <- parPvclust(cl, lung, nboot=1000) ## End(Not run)
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