[R] A question about "union"

[Leon Yee]

Cool! It works!

Thank you very much!

Leon

Yihui Xie wrote:
> You need to get() their elements instead of merely using variable names.
> 
> Regards,
> Yihui
> --
> Yihui Xie <xieyihui at gmail.com>
> Phone: +86-(0)10-82509086 Fax: +86-(0)10-82509086
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> Renmin University of China, Beijing, 100872, China
> 
> 
> 
> On Fri, Oct 17, 2008 at 6:23 PM, Leon Yee <yee.leon at gmail.com> wrote:
>> Dear all,
>>
>>   I have a question about "union".  "union" handles two vectors' elements to
>> get their union, but I have many vectors and I want to get the union of all
>> of them. So I wrote a loop:
>>
>> all <-c();
>> for(var in ls(pattern="xyz"))
>> # all of the vectors with pattern of "xyz"
>> {
>>   all <- union(all, var);
>> }
>>
>>
>> but the result is like this: ("xyzblabla1", "xyzblabla2", "abcxyz", ... ) --
>> just a collection of the variable names, not the union of their elements.
>>
>> How can I solve this problem?
>>
>> thanks!
>>
>> Leon
>>
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>> and provide commented, minimal, self-contained, reproducible code.
>>
>