[R] read data into R with some constraints

[Yu-Ling Wu]

Hi,

I have a big data file (over 30,000 records) looks
like this:

100, 20, 46, 70
103,  0, 22, 45
117, -1, 34, 65
120, 15,  0, 25
113,  0,  -1, 32
142, -1, -1, 55
.....

I want to read only those records having positive
values in all of the  four 
columns. That is, I don't want to read record # 3, 5,
and 6 into R. However,
when I type:

read.csv("data.csv", sep=",")  -> rawdata

it reads the whole thing into R including those
records I don't want.
Could anyone tell me how I can read only those records
I want?

Thanks,
Yu-Ling Wu




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