[R] All possible pairs of two variables

[Yihui Xie]

But x is from 0 to "y" instead of a fixed number (say, 10)...

If we are to use expand.grid(), we should filter out half of rows in the result:

> z = expand.grid(0:10, 0:10)
> z[z[,1] <= z[,2], ]
    Var1 Var2
1      0    0
12     0    1
13     1    1
23     0    2
24     1    2
25     2    2
34     0    3
35     1    3
36     2    3
37     3    3
....

Yihui

On Thu, Sep 11, 2008 at 8:53 PM, hadley wickham <h.wickham at gmail.com> wrote:
> On Wed, Sep 10, 2008 at 11:34 PM, Ron Michael <ron_michael70 at yahoo.com> wrote:
>> I have two variables (x,y) :
>>
>> x : it takes all integer values from 0 to y and,
>> y : takes all values from 0, 10
>>
>> I am looking for some R code to find all possible pairs of (x,y). Can anyone please help me?
>
> ?expand.grid
>
> Hadley
>
> --
> http://had.co.nz/
>


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