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 mostly interested to find easy solutions for my students. They are not mathematically/programming oriented (I am working in Education) Thank you for your response Dr. Iasonas Lamprianou Assistant Professor (Educational Research and Evaluation) Department of Education Sciences European University-Cyprus P.O. Box 22006 1516 Nicosia Cyprus Tel.: +357-22-713178 Fax: +357-22-590539 Honorary Research Fellow Department of Education The University of Manchester Oxford Road, Manchester M13 9PL, UK Tel. 0044 161 275 3485 iasonas.lamprianou at manchester.ac.uk
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 package 'plyr' available on CRAN. See also the package home page: http://had.co.nz/plyr/ HTH, Tobias