[R] microarray-like graph

From: Eric Hu <list.eric_at_gmail.com>
Date: Fri 19 May 2006 - 11:31:02 EST


Hi, I am beginning to learn R and have a data table that I would like to produce a microarray-like plot. The table looks like this:

3 0 0 3 -377.61 1.94
3 0 0 3 -444.80 2.36
2 1 0 3 -519.60 2.39
1 1 1 3 -54.88 2.49
2 1 1 4 -536.55 2.53

1 0 1 2 108.29 2.62
2 0 0 2 39.56 2.62
3 0 1 4 108.32 2.63
2 0 0 2 -455.23 2.84
1 0 0 1 -432.30 2.98
...

I would like to assign colors to the first three columns and plot the last column against fourth column which is the sum of the first three at each row. Can anyone point to me how to approach this? Thanks for your suggestions.

Regards,
-Eric

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