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开发者_开发问答),
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))

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

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)