R Tips and Tricks
- Execute R codes after exiting from a shell prompt.
First write a R script file, say "myfile.R". Then type
nohup R < myfile.R > myfile.out --vanilla &
- Output graph to file:
postscript(file="test.ps", paper="special", width=8, height=6, horizontal=T)
pairs(xxx, cex=0.6)
dev.off()
- Evalue an expression use eval().
ss = expression(sin(pi/2))
eval(ss)
-
mar specifies a numerical vector of the form
c(bottom, left, top, right) which gives the number
of lines of margin to be specified on the four sides of the plot.
x = seq(-pi, pi, length=100)
postscript("ex1.ps", paper="special", width=8, height=3)
par(mfrow=c(1, 3))
par(mar=c(4.5, 2.5, 1, 0.5))
plot(x, sin(x))
plot(x, sin(x))
plot(x, sin(x))
dev.off()
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