Re: [R] regression on data subsets in datafile

2011-09-12 Thread Gabor Grothendieck
On Mon, Sep 12, 2011 at 3:42 AM, marcel wrote: > I have data of the form > > tC <- textConnection(" > Subject Date    parameter1 > bob     3/2/99  10 > bob     4/2/99  10 > bob     5/5/99  10 > bob     6/27/99 NA > bob     8/35/01 10 > bob     3/2/02  10 > steve   1/2/99  4 > steve   2/2/00  7 > s

Re: [R] regression on data subsets in datafile

2011-09-12 Thread Dennis Murphy
Hi: Here's one approach: # date typo fixed in record 5 - changed 35 to 5 tC <- textConnection(" Subject Dateparameter1 bob 3/2/99 10 bob 4/2/99 10 bob 5/5/99 10 bob 6/27/99 NA bob 8/5/01 10 bob 3/2/02 10 steve 1/2/99 4 steve 2/2/00 7 steve 3/2/01 10 steve

[R] regression on data subsets in datafile

2011-09-12 Thread marcel
I have data of the form tC <- textConnection(" Subject Dateparameter1 bob 3/2/99 10 bob 4/2/99 10 bob 5/5/99 10 bob 6/27/99 NA bob 8/35/01 10 bob 3/2/02 10 steve 1/2/99 4 steve 2/2/00 7 steve 3/2/01 10 steve 4/2/02 NA steve 5/2/03 16 kevin 6/5/04 2