I have a small data set consisting of two columns of data and a column designating which of the two sites the data was taken at. I have used xyplot
to sort by groups, but I can't figure out how to alter the symbology of each group separately. I also need to add a regression line, and can only figure out how to do that in plot
. What graphics package can give me these features in the same graph?
I have looked into different graphics packages to find one in which I can do everything I need, but I am new to R and am not having much luck.