[R] Plotting multiple lines

Jonathan Baron baron at psych.upenn.edu
Tue Sep 23 20:35:50 CEST 2003

On 09/23/03 15:49, K Skanes wrote:
>I have a data set with 7 years worth of data, and 2 different values (a real 
>value and a model value) of interest in each year for different lengths.  I 
>would like a plot with the year on the y axis and an animal length along the 
>x axis.  For each year I would like to see two lines, one representing real 
>data and one representing model data.  I would like either the model or real 
>line to be red.

One way to do it is with barplot.  You would put your data in a
matrix m1 in which the columns were animals and the rows were
real/model.  (I might have it backward about rows/columns).  The
something like barplot(m1,beside=T) and lots of other options for
labels, colors, line thickness, line spacing, etc., although red
just might turn out to be the default.  Look at the help for

Jonathan Baron, Professor of Psychology, University of Pennsylvania
Home page:            http://www.sas.upenn.edu/~baron
R page:               http://finzi.psych.upenn.edu/

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