[R] How to plot a matrix with 18 rows by row vs. a vector in a single graph, resulting 18 lines with different colors?

Spencer Graves spencer.graves at pdf.com
Wed May 11 17:37:20 CEST 2005

Have you considered "matplot":

matplot(1:3, array(1:6, dim=c(3,2)), type="b")

spencer graves

Xiao Shi wrote:

> I have a matrix gene=array(rnorm(180), dim=c(18,10)) and a vector time=c(0,
> 0.5,2,4,6,8,12,24,48,72).
> So i can get a plot with plot(time,gene[1,],type="b",col="green") for the 
> first row.So how can i get all the 18 rows in the same plot VS. the same 
> vector time=c(0,0.5,2,4,6,8,12,24,48,72).
> Any suggestions.Thanks !
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