Hello Folks. This must be a silly question with a (not) obvious (to me) answer.
Consider this: tmp <- matrix(1:200, nrow = 20) vec <- 300:309 tmp[9,] <- vec # replacing one row works fine p <- c(3, 11, 17) tmp[p,] <- vec # replacing multple rows pastes the values down a column and recycles vec. What I want to do is replace multiple rows simultaneously at once. I suppose I can write a function, but this seems pretty fundamental so I feel I must be missing some obvious alternative. I'm feeling like I'm in the Inferno! TIA. Bryan ************* Bryan Hanson Professor of Chemistry & Biochemistry DePauw University, Greencastle IN USA > sessionInfo() R version 2.12.0 (2010-10-15) Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit) locale: [1] en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8 attached base packages: [1] splines datasets tools grid grDevices graphics utils stats [9] methods base other attached packages: [1] survival_2.35-8 gridExtra_0.7 GGally_0.2.2 xtable_1.5-6 [5] mvbutils_2.5.1 ggplot2_0.8.8 proto_0.3-8 reshape_0.8.3 [9] ChemoSpec_1.46 seriation_1.0-2 colorspace_1.0-1 TSP_1.0-1 [13] R.utils_1.5.3 R.oo_1.7.4 R.methodsS3_1.2.1 rgl_0.92.794 [17] lattice_0.19-13 mvoutlier_1.4 plyr_1.2.1 RColorBrewer_1.0-2 [21] chemometrics_1.0 som_0.3-5 robustbase_0.5-0-1 rpart_3.1-46 [25] pls_2.1-0 pcaPP_1.8-3 mvtnorm_0.9-92 nnet_7.3-1 [29] mclust_3.4.6 MASS_7.3-8 lars_0.9-7 gclus_1.3 [33] cluster_1.13.1 e1071_1.5-24 class_7.3-2 ______________________________________________ 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.
