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22626
2010 Jan 26
0
splitting a factor column into binary columns for each level
Yesterday I posted the following question (my apologies for not putting a subject line):
=================question======================
Hello -- I would like to know of a more efficient way of writing the following piece of code. Thanks.
options(stringsAsFactors=FALSE)
orig <- c(rep('11111111',100000),rep('22222222',200000),rep('33333333'
2006 May 22
1
win2k memory problem with merge()'ing repeatedly (long email)
...ject a11 is 17996
The current size of atot is 502540
a.eval.text is: -merge(atot, a11, all=T)-
i is: 11 216497 225184 5.8 1.8 467875 889825 12.5 6.8 362507 888747 9.7 6.8
The size of object a12 is 17996
The current size of atot is 1015940
a.eval.text is: -merge(atot, a12, all=T)-
i is: 12 226738 322626 6.1 2.5 531268 1577138 14.2 12.1 362507 1569929 9.7 12
The size of object a13 is 17996
The current size of atot is 2082284
a.eval.text is: -merge(atot, a13, all=T)-
i is: 13 247219 527588 6.7 4.1 597831 2209110 16 16.9 362507 2749247 9.7 21
The size of object a14 is 18012
The current size of ato...