Adding simple legend to plot in R

Question

I would like to create a very simple plot  I am using this data    a  lt - read table  https   dl dropbox com u 22681355 a csv   sep      header TRUE   plot a X25  type  l  col  red   ylim c 0 100   lines a X25 1  type  l   col  blue   lines a X25 2  type  l   col  green   lines a X25 3  type  l   col  brown     Now I would like to add a simple legend that indicates which color is which variable   I understand that I can use the legend   command  but my problem is that I don t know how to put colors next to the text in the legend   What s the simplest command that would do this

User · Accepted Answer

Take a look at  legend and try this   legend  topright   names a  -1        lty 1  col c  red    blue    green    brown    bty  n   cex  75

[r] Adding simple legend to plot in R

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