use as.formula() rather than just formula().
Bill Venables CSIRO Laboratories PO Box 120, Cleveland, 4163 AUSTRALIA Office Phone (email preferred): +61 7 3826 7251 Fax (if absolutely necessary): +61 7 3826 7304 Mobile: +61 4 8819 4402 Home Phone: +61 7 3286 7700 mailto:[EMAIL PROTECTED] http://www.cmis.csiro.au/bill.venables/ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of john seers (IFR) Sent: Friday, 1 February 2008 7:31 PM To: [EMAIL PROTECTED] Subject: [R] Building a formula using paste Hi All I have looked but cannot find an answer to this. I want to build a formula dynamically (in a function), using for example paste, and using it in a model: fr<-"F1" f1<-formula(paste(fr, "~ SensoryTerm")) m1<-aov(f1, data=vdata) So this is the equivalent of m1<-aov(F1 ~ SensoryTerm, data=vdata) This works fine but the problem is the formula appears as "f1" in the summary(m1) of the model and not "F1 ~ SensoryTerm". With many models this can be a bit confusing .... Is there a way to code this so the formula appears in the model summary? Regards John Seers > sessionInfo() R version 2.6.1 (2007-11-26) i386-pc-mingw32 locale: LC_COLLATE=English_United Kingdom.1252;LC_CTYPE=English_United Kingdom.1252;LC_MONETARY=English_United Kingdom.1252;LC_NUMERIC=C;LC_TIME=English_United Kingdom.1252 attached base packages: [1] stats graphics grDevices datasets utils methods base other attached packages: [1] pixmap_0.4-7 gplots_2.3.2 gdata_2.3.1 gtools_2.4.0 rcom_1.5-2.2 [6] nnet_7.2-38 e1071_1.5-17 class_7.2-38 tree_1.0-26 mgcv_1.3-29 [11] MASS_7.2-38 car_1.2-7 RODBC_1.2-2 RWinEdt_1.7-9 > --- ______________________________________________ R-help@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. ______________________________________________ R-help@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.
