Thank you all for your input! I did eventually work it out and my solution looks like so:

# test.R
# Parse and use command line arguments
# Invoke % R --slave --args 100 < test.R 

Args <- commandArgs();      # retrieve args
x <- c(1:as.real(Args[4])); # get the 4th argument
y <- c(x^2);                # work out square
png(filename="image.png");  # create image file
plot(x,y);                  # plot image

[download]
This creates the image file image.png which contains a plot of an exponential curve =)

The variable Args contains the following:

[1] "/usr/lib/R/bin/exec/R" 
[2] "--slave" 
[3] "--args"               
[4] "100"

[download]
We only require the 4th element for our graph. You can add more arguments and just pick them off accordingly =)

I hope someone else finds this useful.

Smoothie, smoothie, hundre prosent naturlig!

In reply to Re^2: Passing parameters to R script by j1n3l0
in thread Passing parameters to R script by j1n3l0

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