On Jan 5, 2011, at 2:00 PM, ANJAN PURKAYASTHA wrote:
Hi,
I have a file of the following type:
id a b
1 0.5 5
2 0.7 15
3 1.6 7
4 0.5 25
....................
I would like to plot the data in column a on the y-axis and the
corresponding data in column id on the x-axis, so plot(a~id).
However I
would like to colour these points according to the data in column b.
column b data may be colour coded into the following bins: 0-9; 10-19;
20-29.
Any idea on how to accomplish this?
Something along the lines of this code:
plot(a ~ id, data=dfrm,
col=c("red", "green", "blue")[findInterval(dfrm$b,
c(0,10,20,30) )] )
--
David.
TIA,
Anjan
--
===================================
anjan purkayastha, phd.
research associate
fas center for systems biology,
harvard university
52 oxford street
cambridge ma 02138
phone-703.740.6939
===================================
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