Hello,
I' m trying to change the formula in the rpart function. The
format of a general formula is Answer ~ expression, where Answer is
the dependent variable and expression is set of terms containing the
independent variables and separated by operators. I want the response
of the formula is more than one dependent variable. It is possible?
On Wednesday 09 January 2008 1:57 pm, Carla Rebelo wrote:> Hello, > > I' m trying to change the formula in the rpart function. The > format of a general formula is Answer ~ expression, where Answer is > the dependent variable and expression is set of terms containing the > independent variables and separated by operators. I want the response > of the formula is more than one dependent variable. It is possible? > > ______________________________________________ > R-help at r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html and provide commented, minimal, > self-contained, reproducible code.You should take a look at package 'mvpart': http://cran.r-project.org/src/contrib/Descriptions/mvpart.html -- Alberto G. Murta IPIMAR - National Institute of Fisheries and Marine Research Avenida de Brasilia s/n; 1449-006 - Lisboa; Portugal Tel: +351 213027000; Fax: +351 21 3015948; email: amurta at ipimar.pt
On Wed, 2008-01-09 at 13:57 +0000, Carla Rebelo wrote:> Hello, > > I' m trying to change the formula in the rpart function. The > format of a general formula is Answer ~ expression, where Answer is > the dependent variable and expression is set of terms containing the > independent variables and separated by operators. I want the response > of the formula is more than one dependent variable. It is possible?Try one or both the packages mvpart or party. mvpart replaces all of rpart when you load it and provides handling for multivariate responses. party provides an alternative implementation based on conditional inference trees. G -- %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% Dr. Gavin Simpson [t] +44 (0)20 7679 0522 ECRC, UCL Geography, [f] +44 (0)20 7679 0565 Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk Gower Street, London [w] http://www.ucl.ac.uk/~ucfagls/ UK. WC1E 6BT. [w] http://www.freshwaters.org.uk %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%