R help - Oct 2013 - Where is element 30?

Hi I have a vector like that

readCsvFile$V1
 [1]  30  31  32  33  34  35  36  37  38  39 310 311 312 313 314 315 316 317 318
[20] 319 320 321  20  21  22  23  24  25  26  27  28  29 210 211 212 213 214 215
[39] 216 217 218 219 220 221 222 223  40  41  42  43  44  45  46  47  48  49 410
[58] 411 412 413 414 415 416 417 418 419 420 421


and I am looking to find where the number 31 is located. So I need one function
to return me the index of where the number 31 is.
Is there a function for that in R?

Regards
Alex
	[[alternative HTML version deleted]]

Hi, Alaios,

check out

?which

and in particular its "Examples" and "See Also" section.

  Hth -- Gerrit

On Tue, 22 Oct 2013, Alaios wrote:
> Hi I have a vector like that
>
> readCsvFile$V1
> ?[1]? 30? 31? 32? 33? 34? 35? 36? 37? 38? 39 310 311 312 313 314 315 316
317 318
> [20] 319 320 321? 20? 21? 22? 23? 24? 25? 26? 27? 28? 29 210 211 212 213
214 215
> [39] 216 217 218 219 220 221 222 223? 40? 41? 42? 43? 44? 45? 46? 47? 48?
49 410
> [58] 411 412 413 414 415 416 417 418 419 420 421
>
>
> and I am looking to find where the number 31 is located. So I need one
function to return me the index of where the number 31 is.
> Is there a function for that in R?
>
> Regards
> Alex

Follow these examples:
> grep(5,1:10)
[1] 5
> grep(3, c(1,5,2,3,6))
[1] 4



-Don


-- 
Don MacQueen

Lawrence Livermore National Laboratory
7000 East Ave., L-627
Livermore, CA 94550
925-423-1062





On 10/22/13 4:21 AM, "Alaios" <alaios at yahoo.com> wrote:
>Hi I have a vector like that
>
>readCsvFile$V1
> [1]  30  31  32  33  34  35  36  37  38  39 310 311 312 313 314 315 316
>317 318
>[20] 319 320 321  20  21  22  23  24  25  26  27  28  29 210 211 212 213
>214 215
>[39] 216 217 218 219 220 221 222 223  40  41  42  43  44  45  46  47  48
>49 410
>[58] 411 412 413 414 415 416 417 418 419 420 421
>
>
>and I am looking to find where the number 31 is located. So I need one
>function to return me the index of where the number 31 is.
>Is there a function for that in R?
>
>Regards
>Alex
>	[[alternative HTML version deleted]]
>