28 Apr 2012 17:28

## problem in matching numbers in two variables

```i want to compare two variables (having numbers) serially for
matching/dismatching
both having equal length

> x
[1] 2 2 1 2 3 2 2 2 2 3 3 2 2 2 2 2 2 3 2 2 2 2 2 2 2 2 2 2 3 2 3 2 2 2 1
2 2
[38] 2 2 2 3 2 3 2 2 1 2 2 2 2 1 1 1 3 2 2 2 2 1 1 3 1 1 1 2 2 2 3 2 3 3 3
2 2
[75] 2 2 3 2 2 1 1 1 2 3 2 2 2 2 2 2 2 2 2 1 1 3 2 2 2 2 2 2 2 2 2 2 2 1 3
> y
[1] 2 2 2 1 3 1 3 2 1 3 3 3 3 2 2 1 2 3 3 3 1 1 2 2 2 2 2 2 1 2 3 1 2 2 1
1 2
[38] 1 2 3 2 1 3 1 1 2 2 2 2 1 2 1 2 3 2 3 2 1 2 2 3 1 1 1 2 2 2 3 2 3 3 3
3 3
[75] 2 2 1 2 1 2 1 2 1 3 3 3 1 2 2 2 1 2 1 2 2 3 2 3 2 3 2 2 2 2 1 2 2 2 3
> length(x)
[1] 109
> length(y)
[1] 109
> #both having equal length
> which(x%in%y)  #gives no of matches positions
[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  99 100 101 102 103 104 105 106 107
108
[109] 109
> length(which(x%in%y))
[1] 109

it show that all numbers are matched ,but in real this is not true
so,how to find matched numbers from two variables(numeric) like this?

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```

Gmane