[R] read.table and factor

[Bill Simpson]

Thanks very much Peter

> as.numeric(as.character()) should do it
yes, this works, thanks.
> 
> > How can I either tell read.table to leave the first two cols as numeric
> > (not factors) or convert them from factors into the proper numeric values?
> 
> If they're not read as numeric, then they must contain non-numeric
> elements. Either fix the typo (!) or set na.strings in the call to
> read.table. 

No, so far as I can tell neither std nor cf contain non-numeric elements.
This problem arises with every data file I read (the files are created by
a C program). I attach a file--std and cf are numeric, yet read.table

d<-read.table("~/papers/letter/data/ws60.dat",header=TRUE)

makes d$std and d$cf factors.

Bill
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std	cf	hit	miss	fa	cr
920	980	40	15	14	31
950	1010	24	23	23	30
1190	1250	26	21	27	26
1010	1070	33	10	28	29
1040	1100	35	10	11	44
1070	1130	40	17	13	30
890	950	44	14	13	29
830	890	34	13	11	42
1160	1220	30	17	14	39
1130	1190	32	19	20	29
860	920	37	8	17	38
800	860	34	14	11	41
980	1040	33	14	15	38
1100	1160	32	11	16	41
860	920	45	9	10	36
1040	1100	26	14	19	41
1130	1190	41	12	13	34
950	1010	31	18	22	29
890	950	36	12	9	43
1160	1220	20	24	14	42
800	860	33	14	10	43
1100	1160	29	18	7	46
1010	1070	39	10	14	37
1070	1130	40	9	15	36
830	890	47	9	5	39
980	1040	40	7	18	35
1190	1250	28	18	18	36
920	980	49	2	14	35
830	890	39	1	6	54
1040	1100	36	19	6	39
980	1040	34	9	15	42
1100	1160	36	13	14	37
860	920	47	10	15	28
800	860	41	12	6	41
1010	1070	30	10	10	50
1190	1250	26	12	18	44
950	1010	33	9	25	33
1130	1190	34	13	11	42
1160	1220	40	15	17	28
920	980	42	10	15	33
890	950	41	14	7	38
1070	1130	39	13	12	36