[R] Line plot with 3 points

[Pauline Gu]

Dear R-experts,

I have a data file df as the following:

genename		variable at 1hr		variable at 4 hr		variable at 10 hr
gene1
gene2
.
.
.
gene5000

I would like to have a graph with X-axis as the time point (1hr, 4hr, 
10hr), and Y-axis as the value of the variable.  So, basically, I want to 
do a line with the three different values at 1hr , 4hr and 10hr for all the 
5000 genes.  My purpose is to see a pattern for these genes.  I am 
expecting more genes with high values at 1hr than 4hr.

I tried to use ts package, but, they only allow 10 series.  I searched the 
R-help archive, but found nothing.  Can anyone point me to the right direction?

Thanks in advance for your help.

Pauline

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