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Thanks for the two replys, that settled my
question.
And how to convert the data frame to
vector
I got this from s-plus
>m.all<- as.vector(WHO[WHO[,2] == "Argentina"
& WHO[,3] == 1980 & WHO[,4] == 1 & WHO[,5] == "B00",
6:23],mode="NUMERIC")
> m.all
unknown(q1 = 0.0447109294728576, q2 =
0.00269321320916402, q3 = 0.00261711593823606, q4 = 0.00539140997091196, q5 =
0.0073341300603907, q6 =
0.00815965233195142, q7 = 0.0100250372003027,
q8 = 0.0148791752125287, q9 = 0.0239547791128666, q10 = 0.038536280096176, q11 =
0.0563545018963813, q12 = 0.0831131954707847, q13 = 0.123400910260711,
q14 = 0.174278618664434, q15 = 0.255247405299222, q16 =
0.683480775000682, q17 = NA, q18 = NA)
> m.all *8
Error in
m.all * 8: Non-numeric first operand
> m.all[1]
Error in m.all[1]:
Objects of mode unknown can't have length >0
>m.all<- as.vector(WHO[WHO[,2] == "Argentina"
& WHO[,3] == 1980 & WHO[,4] == 1 & WHO[,5] == "B00", 6:23])
>
as.double(m.all)
Error in as.double: Cannot coerce mode list to double:
list(..
What I want to get is just a vector, all are
numeric values. I need a neat and clean way to do that.
Thanks again
Chushu Gu
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