[R] normalizePath

Hi, I update R from 2.10 to 2.13. Then I find soma problems when I start R. Warning infos as below: # Warning message: In normalizePath(c(new, .Library.site, .Library), "/") : path[1]="": No such file or directory R version 2.13.1 (2011-07-08) Copyright (C) 2011 The R Foundation for Stat

[R] SOM for binary data

Hi, I know that usually SOM (self-organizing map) is just for continuous data. But I want to apply the SOM into binary data. It seems that some algorithms can handle this. How to implement it in R? Or are there some packages in R for binary data SOM? Thank you in advance!! [[alternative

[R] Data projection in correspondence analysis

Hi, I have two data binary dataset. I want to applied correspondence analysis into the first data, and then project the second data into the CA space defined by the first dataset. Can we use the ca package or anacor package to project new data? If not, are there some ways to do this ? Thank you i

[R] heatmap clustering dendrogram export

Hi, I am a beginner for R. I had use gplots to generate a heatmap as following: >heatmap.2(matrix, col=topo.colors(75), dendrogram="column", Rowv=FALSE, trace="none", key=TRUE, keysize=0.8, density.info="none", cexRow=0.2, cexCol=0.6) It work well. It generate heatmap whith rcolumn clustering d