I'm starting to put code in multi-use functions rather than in individual
scripts and have not learned how to invoke the function from the command
line. If this information is in Norman Matloff's 'The Art of R Programming'
or Hadley Wickham's 'Advanced R' please point me to the proper place.
Here's an example, the script 'pairwise-plots-continuous-vars.R' consists
of this function:
plotpairs <- function(x1,x2,x3,y,plotmain) {
require(compositions)
opar <- par(mar=c(4,4,3,1))
NO3 <- x1
SO4 <- x2
pH <- x3
pairwisePlot(cbind(NO3,SO4,pH),clr(y),add.line=T)
title(main=plotmain)
par(opar)
detach('package:compositions')
return()
}
(I suppose the return statement is superfluous since there is no value
returned to a calling function.)
What I want to do is call plotpairs() with appropriate arguments for each
plot as needed.
TIA,
Rich
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