Can anyone tell me how to change the labels in a legend created by spplot in R? It is a typical vertical ribbon legend automatically generated by spplot. Based on color, it is labelled 1-7 but I would like to label it 1%-7% and make the labels larger.
I understand that the graphics are based on lattice but it is still difficult to find anywhere how to do what, I would think, would be fairly straight forward.
The code I have is
plot2 <- spplot(mymap, "percentage", col.regions = plotclr, at = round(class$brks, digits=1) )
where: mymap is a typical shape file with an attributes column called percentage which pertains to certain map regions; plotclr is my vector of colors, class$brks are the divisions of the percentages to which the colors correspond. The code works fine. I just can't change the legend labeling.