CODEWITHSUNDEEP
rheatmap
PiaklA
PiaklA

Reputation: 505

R Heat Map , Labels on Y axis coming out to be very close

I am using R to plot the heat map of a data in CSV file (10 (Columns) Conditions and 1000 (Rowa))

Following is the Code I am using .. 

nba <- read.csv("1317754115.csv", sep=",")
nba_matrix <- data.matrix(nba)
cexRow = 0.2 + 1/log10(1000),
cexCol = 0.2 + 1/log10(10),
nba_heatmap <- heatmap(nba_matrix, Rowv=cexRow, Colv=cexCol, 
    col = heat.colors(256), scale="column", margins=c(5,10))

enter image description here Heat Map Image

Now Rows on right hand sides are very close so I can not read the label names ,

Can some one please tell me how can i show all labels on Y-Axis

Thanks

Upvotes: 2

Views: 11893

Answers (1)

John Colby
John Colby

Reputation: 22588

You can't change the aspect ratio with the base heatmap function. To get this functionality, see heatmap.2 in the gplots package, or aspectHeatmap in the ClassDiscovery package. Here's an example:

require(gplots)

nrow = 100
ncol = 10

set.seed(12345)
row.names = replicate(nrow, paste(letters[sample(10)], collapse=''))
col.names = replicate(ncol, paste(letters[sample(10)], collapse=''))

values = matrix(runif(nrow*ncol), nrow=nrow, dimnames=list(row.names, col.names))

dev.new(width=5, height=10)
heatmap(values)
dev.new(width=5, height=10)
heatmap.2(values)

enter image description here enter image description here

Upvotes: 2

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