Does it not work in the official release of R 2.8.0?
On Mon, Dec 1, 2008 at 5:32 PM, Alan Cohen <[EMAIL PROTECTED]> wrote:
> Hello,
>
> I've been using a pre-release version of R v 2.8.0 for Windows for the last
> couple months. I think that there have been consistent problems with
> subsetting data sets, but I had usually been able to find work-arounds or was
> unable to confirm this as a bug. I think now I have, and would love advice
> on what to do if I've made some error.
>
> The data set in question ("c") has 500,000 observations and 44 variables.
> The problematic variable, "month," takes integer values 1:12, and all are
> present in the data set:
>
>> unique(c$month)
> [1] 11 10 9 8 12 1 7 4 6 2 5 3
>
> However, I can't select observations of c for certain values of month:
>
>> c[c$month==11,]
> [1] STATE DISTRICT TALUK VILLAGE TYPE
> SERIALNO INTDATE QH101P
> [9] QH114 QH115A1 QH115B1 QH115C1 QH115A2 QH115B2
> QH115C2 QH115A3
> [17] QH115B3 QH115C3 QH115A4 QH115B4 QH115C4 QH115A5
> QH115B5 QH115C5
> [25] QH116 QH117A1 QH117B1 QH117C1 QH117A2 QH117B2
> QH117C2 QH117A3
> [33] QH117B3 QH117C3 QH117A4 QH117B4 QH117C4 QH117A5
> QH117B5 QH117C5
> [41] phase year month stdistid.rch
> <0 rows> (or 0-length row.names)
>
> I get the same result for c[c[,43]==11,], and
>
>> length(c$month[c$month==11])
> [1] 0
>
> This is true for most values of month (1,2,4,5,7,8,10,11), but the multiples
> of 3 work, apparently correctly.
>
> Other variables do not have this problem (the columns shift in the email, but
> these three observations have month=11):
>
>> c[c$STATE==11,][1:3,]
> STATE DISTRICT TALUK VILLAGE TYPE SERIALNO INTDATE QH101P QH114 QH115A1
> QH115B1 QH115C1 QH115A2 QH115B2 QH115C2 QH115A3 QH115B3
> 87556 11 2 1 1 1 5 1187 6 0 0
> 0 0 0 0 0 0 0
> 87557 11 2 1 1 1 10 1187 3 0 0
> 0 0 0 0 0 0 0
> 87558 11 2 1 1 1 14 1187 5 0 0
> 0 0 0 0 0 0 0
> QH115C3 QH115A4 QH115B4 QH115C4 QH115A5 QH115B5 QH115C5 QH116 QH117A1
> QH117B1 QH117C1 QH117A2 QH117B2 QH117C2 QH117A3 QH117B3 QH117C3
> 87556 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0
> 87557 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0
> 87558 0 0 0 0 0 0 0 0 0
> 0 0 0 0 0 0 0 0
> QH117A4 QH117B4 QH117C4 QH117A5 QH117B5 QH117C5 phase year month
> stdistid.rch
> 87556 0 0 0 0 0 0 1 1998 11
> 1102
> 87557 0 0 0 0 0 0 1 1998 11
> 1102
> 87558 0 0 0 0 0 0 1 1998 11
> 1102
>
> The data set is called directly from a csv file, where all variables should
> be stored in the same way, and using as.numeric(as.character(c$month)) does
> not help. Nor does restarting R, restarting the computer, or trying the
> operation on smaller subsets of c. I'd appreciate any help you an provide.
>
> Sincerely,
> Alan Cohen
>
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>
--
Stephen Sefick
Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods. We are mammals, and have not exhausted the
annoying little problems of being mammals.
-K. Mullis
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