On 08/02/15 10:57, jgui001 wrote:
I am plotting three sets of data on a single graph, and doing around 100+
graphs.
I can use the expression function to superscript the 2 but that seems to
force me to manually put in the R squared values. Is there away around this?

This code will show what it should look like this but with the 2
superscripted

r1<-c(0.59,0.9,0.6)
plot(1:6)
legend("topleft",
legend=c(paste("G1 r=",r1[1]), paste("G2 r=",r1[2]), paste("G3 r=",r1[3])))

One way of accomplishing this is:

r1<-c(0.59,0.9,0.6)
l3 <- c(as.expression(bquote(G[1]~~ r^2 == .(r1[1]))),
        as.expression(bquote(G[2]~~ r^2 == .(r1[2]))),
        as.expression(bquote(G[3]~~ r^2 == .(r1[3]))))
plot(1:6)
legend("topleft",legend=l3)

Don't ask me to explain how this works. I just hammered and hoped till the desired results were produced.

There are other ways, I think, some of which may be less prolix. Someone else may chime in and suggest a better way, but I think that the foregoing does what you want.

cheers,

Rolf Turner

--
Rolf Turner
Technical Editor ANZJS
Department of Statistics
University of Auckland
Phone: +64-9-373-7599 ext. 88276
Home phone: +64-9-480-4619

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