[R] A question on histogram (hist): coordinates on x-axis are too sparse
Duncan Murdoch
murdoch at stats.uwo.ca
Wed Jan 21 13:26:45 CET 2009
Li, Hua wrote:
> Dear R helpers:
> Let's say I have some data X,
> X <- runif(1000, 1, 10000000000)
> pdf('X.pdf', width=100,height=5)
> hist(X, breaks=1000)
> dev.off()
> I find that, on x-axis the coordinates are 0e+00, 2e+09, 4e+09, 6e+09, 8e+09, 1e+10. Only five numbers, which is too sparse in a 100x5 pdf file. I want the x-axis coordinates to become more dense, e.g. 0e+00, 1e+09, 2e+09, 3e+09,..... 8e+09, 9e+09, 1e+10. What argument (or function) should I revise to let this happen??
> Thanks a lot!!
> Best, Hua
You can draw the axes yourself:
hist(X, axes=F)
axis(1, at=pretty(X, n=100))
axis(2)
box()
Duncan Murdoch
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