Change the size of the text in legend according to the length of the legend vector in the graph

Posted by user1021713 on Stack Overflow See other posts from Stack Overflow or by user1021713
Published on 2012-10-08T08:34:35Z Indexed on 2012/10/08 9:37 UTC
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r

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plot

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legend

I have to draw a 20 plots and horizontally place a legends in each plots.

I gave the following command for the first plot:

plot(x=1:4,y=1:4)
legend("bottom",legend = c("a","b","c","d"),horiz=TRUE,text.font=2,cex=0.64)

then for the second plot I tried :

plot(x=1:2,y=1:2)
legend("bottom",legend = c("a","b"),horiz=TRUE,text.font=2,cex=0.64)

But because the size of the character vector passed to legend argument are different I get the size of the legend different.

Since I have to plot so many different plots having varying sizes of legends,I would want to do it in an automated fashion.

Is there a way to do this which can fix the size of the legend in all the plots and fit it to graph size?

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