load a local rmd matrix

[rene]

hi i want to make a dendrogram with my own local rmd matrix, it is possible? and how i can load my local mrsd matrix ?

[Xinqiu Yao]

Hi,

If your rmsd matrix is a plain ascii file, use read.table() to read it into R. See help(read.table) for more details. Then, you can get the dendrogram by calling e.g. hclust(). Here is a simple example,

# assume the rmsd matrix is saved in a text file named 'rmsd.txt', and each column of the matrix is separated by space
dmat <- read.table('rmsd.txt')
hc <- hclust(as.dist(dmat))

# simply plot the dendrogram
plot(hc)

# nicer plot of dendrogram
hclustplot(hc, k=2)

# convert to a 'dendrogram' object
dend <- as.dendrogram(hc)

[Barry Grant]

Basic R question

[rene]

thank you Xin-Qiu Yao work very well