Re: [R] split file equivalent in R

2010-07-19 Thread Iasonas Lamprianou
nt of Education The University of Manchester Oxford Road, Manchester M13 9PL, UK Tel. 0044 161 275 3485 iasonas.lampria...@manchester.ac.uk --- On Mon, 19/7/10, Tobias Verbeke wrote: > From: Tobias Verbeke > Subject: Re: [R] split file equivalent in R > To: "Iasonas Lamprianou" &g

Re: [R] split file equivalent in R

2010-07-19 Thread Tobias Verbeke
Hi, On 07/19/2010 11:56 AM, Iasonas Lamprianou wrote: (a)in SPSS PASW there is a 'split file' command is repeats the same analysis for all sub-groups. Is there a split file equivalent in R? There is a by command in base R, but for this type of problems Hadley Wickham has written a nice packa

Re: [R] split file equivalent in R

2010-07-19 Thread Iasonas Lamprianou
Dear all (a)in SPSS PASW there is a 'split file' command is repeats the same analysis for all sub-groups. Is there a split file equivalent in R? (b) Is there a package in R that will compute immediately statistics like Hosmer and Lemeshow Test, pseudo-R squares etc without my intervention? I am