[R] Writing greek letters and subscripts in graph

[Delphine COURVOISIER]

Dear R-users, 

I would like to write Greek letters followed by subscripts in a graph (on the X-axis and in a legend). I would appreciate any help.

thank you,

delphine courvoisier

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Delphine Courvoisier
Clinical Epidemiology Division
University of Geneva Hospital
+4122 37 29029