I am using subset to select the data I want to use for my analysis and find
that after I subset my data frame on one column I get ghost values in the
other columns. here is an example:
> table(data$Dags)
2008/04/12 2008/04/13 2008/04/16 2008/04/17 2008/04/19 2008/05/06
103 140 82 187 179 212 68
2008/05/07 2008/05/12 2008/05/15 2008/05/25 2008/05/28 2008/05/29 2009/04/17
184 308 120 227 250 150 259
2009/04/18 2009/04/20 2009/04/21 2009/05/04 2009/05/15 2009/06/09 2009/06/10
246 241 252 153 366 225 79
2009/06/24 2009/06/25 2009/06/26 2010/03/11 2010/04/27 2010/05/07 2010/05/08
126 278 297 135 285 286 275
2010/05/10 2010/05/11 2010/05/20 2010/05/21 2010/06/02 2010/07/20 2010/08/12
290 22 259 291 381 20 648
2010/08/16 2010/08/18
11 2
> data10<-subset(data, data$Year==2010 & data$Recatpure1==1)
> table(data10$Dags)
2008/04/12 2008/04/13 2008/04/16 2008/04/17 2008/04/19 2008/05/06
0 0 0 0 0 0 0
2008/05/07 2008/05/12 2008/05/15 2008/05/25 2008/05/28 2008/05/29 2009/04/17
0 0 0 0 0 0 0
2009/04/18 2009/04/20 2009/04/21 2009/05/04 2009/05/15 2009/06/09 2009/06/10
0 0 0 0 0 0 0
2009/06/24 2009/06/25 2009/06/26 2010/03/11 2010/04/27 2010/05/07 2010/05/08
0 0 0 23 38 20 29
2010/05/10 2010/05/11 2010/05/20 2010/05/21 2010/06/02 2010/07/20 2010/08/12
18 1 15 45 38 1 5
2010/08/16 2010/08/18
0 0
How can I perform a subset so that these ghost values do not appear at all
in my new table?
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