I want to use the caret package and found out about the timingSamps obtion to obtain the time which is needed to predict results. But, as soon as I set a value for this option, the whole model generation fails. Check this example:
------------------------- library(caret) tc=trainControl(method='LGOCV', timingSamps=10) tcWithout=trainControl(method='LGOCV') x=train(Volume~Girth+Height, method="lm", data=trees, trControl=tcWithout) x=train(Volume~Girth+Height, method="lm", data=trees, trControl=tc) Error in eval(expr, envir, enclos) : object 'Girth' not found Timing stopped at: 0 0 0.003 ---------------------------- As you can see, the model generation works without the timingSamps option but fails if it is specified. What am I doing wrong? My sessioninfo: ------------------ R version 2.15.0 (2012-03-30) Platform: x86_64-pc-linux-gnu (64-bit) locale: [1] LC_CTYPE=en_GB.UTF-8 LC_NUMERIC=C [3] LC_TIME=en_GB.UTF-8 LC_COLLATE=en_GB.UTF-8 [5] LC_MONETARY=en_GB.UTF-8 LC_MESSAGES=en_GB.UTF-8 [7] LC_PAPER=C LC_NAME=C [9] LC_ADDRESS=C LC_TELEPHONE=C [11] LC_MEASUREMENT=en_GB.UTF-8 LC_IDENTIFICATION=C attached base packages: [1] stats graphics grDevices utils datasets methods base other attached packages: [1] MASS_7.3-18 caret_5.15-023 foreach_1.4.0 cluster_1.14.2 reshape_0.8.4 [6] plyr_1.7.1 lattice_0.20-6 loaded via a namespace (and not attached): [1] codetools_0.2-8 compiler_2.15.0 grid_2.15.0 iterators_1.0.6 [5] tools_2.15.0 ------------------------- Thanks! -- Dominik Bruhn mailto: domi...@dbruhn.de ______________________________________________ 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.
