[R] Multiple Plots and y Axis Labels

From: jonboym <jonboym2_at_yahoo.co.uk>
Date: Tue, 08 Jul 2008 04:43:05 -0700 (PDT)

Hi,

I'm using the mfrow parameter in par() to plot several timeseries with a common time x axis as a sequence of plots one below the other. I reduced the top and bottom margins to zero to get a very nice looking plot but sometimes the labels on the y axes from one plot overlap with the y axis labels on the plot above or below.

Any ideas how I can prevent this without losing the look of the plots? ie I don't want gaps between the plots. Below is some example code.

        rain<-ts(scan("rain.csv"),start=1996, frequency=12)
        fire<-ts(scan("fire.csv"),start=1996,frequency=12)

	op<-par(mar=c(0,0,0,0), oma=c(2,5,3,1), mfrow=c(2,1))
	xl <- c(1996,2008)

	plot(rain, xlim=xl, axes=F, col="blue"); 
	axis(2, las=1); axis(1, labels=F); box(); 
	abline(v=1996:2008, lty=3)

	mtext("Rainfall",   side=2, line=line1, cex=mtex);
	mtext(expression(paste("mm ",month^{-1})), side=2, line=line2, cex=mtex);
	
	plot(fire*100, xlim=xl, axes=F, col="red"); 
	axis(2, las=1); axis(1, labels=F); box(); 
	abline(v=1996:2008, lty=3)
	mtext("Fire", side=2, line=line1, cex=mtex);
	mtext(expression(paste("% Area Burned ",month^{-1})), side=2, line=line2,
cex=mtex);
	par(op)
	mtext(plottitle, line=3, font=2, cex=1.5)

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