[R] grep

[Samuelson, Frank*]

as.integer(x/10^(as.integer(log10(x))))



-----Original Message-----
From: Ernesto Jardim [mailto:ernesto at ipimar.pt] 
Sent: Friday, March 12, 2004 12:08 PM
To: Mailing List R
Subject: [R] grep


Hi,

I want to use the first digit of the elements of a vector.

I've tried grep but didn't work.

Any help is welcome.

Thanks

EJ

> grep("^[0-9]",as.character(runif(100,0,2)))
  [1]   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15  16 
17  18
 [19]  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34 
35  36
 [37]  37  38  39  40  41  42  43  44  45  46  47  48  49  50  51  52 
53  54
 [55]  55  56  57  58  59  60  61  62  63  64  65  66  67  68  69  70 
71  72
 [73]  73  74  75  76  77  78  79  80  81  82  83  84  85  86  87  88 
89  90
 [91]  91  92  93  94  95  96  97  98  99 100

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