[R] A question about "union"
yee.leon at gmail.com
Fri Oct 17 12:38:55 CEST 2008
Cool! It works!
Thank you very much!
Yihui Xie wrote:
> You need to get() their elements instead of merely using variable names.
> Yihui Xie <xieyihui at gmail.com>
> Phone: +86-(0)10-82509086 Fax: +86-(0)10-82509086
> Mobile: +86-15810805877
> Homepage: http://www.yihui.name
> School of Statistics, Room 1037, Mingde Main Building,
> 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?
>> R-help at r-project.org mailing list
>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
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