[R] check without loop

Deepayan Sarkar deepayansarkar at yahoo.com
Wed Mar 20 18:24:06 CET 2002



You are probably looking for %in% 
(e.g., 80 %in% arclist should be FALSE,
81 %in% arclist should be TRUE).


--- jimi adams <imij at columbus.rr.com> wrote:
> i am probably just missing this one, but how can i check to see if a number
> is a part of a vector?
> 
> i know i could do a loop checking for equivalence for each element, but i am
> thinking that there must be a simpler way to do it than that ( i think that
> i have even done it in the past, but can't remember how!)
> thanks
> 
> what i am working with:
> (hope this makes sense)
> 
> arclist
>   [1]   2   2   6   7   8   9   9  11  11  11  12  13  14  15  16  17  19
> 21
>  [19]  22  23  24  25  25  29  29  30  32  34  35  35  38  39  40  40  41
> 42
>  [37]  43  44  45  46  47  48  49  50  51  52  53  54  57  58  59  60  61
> 61
>  [55]  61  61  61  61  61  61  61  61  61  61  61  61  61  61  61  61  61
> 61
>  [73]  61  61  61  61  61  61  61  61  61  61  62  65  67  68  68  69  71
> 72
>  [91]  75  76  77  79  81  82  83  84  84  85  86  87  88  90  91  92  93
> 94
> [109]  95  96  96  96  96 100
> 
> # and am sampling from a different list
> # if i draw, say 80, i would then not want to proceed, but if i draw a
> number on arclist i do
> 
> 
> 
> jimi adams
> Department of Sociology
> The Ohio State University
> 300 Bricker Hall
> 190 N Oval Mall
> Columbus, OH 43210-1353
> 614-688-4261
> 
> our mind has a remarkable ability to think of contents as being independent
> of the act of thinking
>                                             -georg simmel
> 
> 
>
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
> r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
> Send "info", "help", or "[un]subscribe"
> (in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch
> _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._

__________________________________________________



-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._



More information about the R-help mailing list