I have a bivariate plot of axis2 against axis1 (data below). I would like
to use different size, type and color for points in the plot for the point
coming from different region. For some reasons, I cannot get it done. Below
is my code.
col <- rep(c("blue", "red", "darkgreen"), c(16, 16, 16))
## Choose different size of points
cex <- rep(c(1, 1.2, 1), c(16, 16, 16))
## Choose the form of the points (square, circle, triangle and
diamond-shaped
pch <- rep(c(15, 16, 17), c(16, 16, 16))
plot(axis1, axis2, main="My plot", xlab="Axis 1", ylab="Axis 2",
col=c(Category, col), pch=pch, cex=cex)
legend(4, 12.5, c("NorthAmerica", "SouthAmerica", "Asia"), col = col,
pch = pch, pt.cex = cex, title = "Region")
I also prefer a control on what kind of point I want to use for different
levels of Region. Something like this:
legend(4,12.5, col(levels(Category), Asia="red", NorthAmerica="blue",
SouthAmerica="green"))
Thanks,
Kumar
Region axis1 axis2 NorthAmerica 5 14 NorthAmerica 8 13 NorthAmerica 8
11 NorthAmerica 6 11 NorthAmerica 5 13 SouthAmerica 8 17 SouthAmerica 7
16 SouthAmerica 7 13 SouthAmerica 8 14 SouthAmerica 6 17 Asia 7 13 Asia
6 15 Asia 7 14 Asia 5 13 Asia 4 16
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