st: Adding a legend to a combined graph

["Joseph McDonnell" <josephmcdonnellnl@hotmail.com>]

Hi all.

A (hopefully) simple question...I want to show the fitted values of four 
regression models on the same data set in one (combined) graph. In 
particular, in each graph, I want to show the FVs of three separate groups. 
I first make four separate graphs, one for each regression. In each graph, 
group A has clpattern(solid), group B has clpattern(dash) and group C has 
clpattern(shortdash). Ranges of X and Y are identical across the four 
models/graphs.

I want to show the graphs as one (combined) graph. So I generate the 
individual graphs and then combine them. Because the legend for the 
individual graphs are identical, I set the legend in each graph to off. 
However, I then want to add the same legend to the combined graph. So 
basically, I want to add a legend that stipulates that Group A has 
clpattern(solid) etc, even though Groups A, B and C are not actually defined 
within the combined graph. Can this be done?

Many thanks.

Regards

Joseph

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