[R] Legends for line and point data

[Steve Murray]

Dear all,

I have a plot which contains 4 data series displayed using solid, dashed and dotted lines, and also points. How do I use lty and pch together to signify that the first legend item is a solid line, the second is point data (pch=16), the third is dashed and the fourth is dotted?

Many thanks,

Steve
 		 	   		  
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