Hi all, it appears that plot.hclust disregards the argument 'cex'. Up until 2.15.1 (and probably all 2.15.x), specifying cex in plot.hclust changed the size of the plotted labels on each leaf. In 3.0.0 the character size remains the same irrespective of the cex setting. Since the help text for plot.hclust does not mention the cex argument, it is possible that an "undocumentde feature" was simply removed - but it was very useful when it was available.
The following code illustrates the problem: data = c(1:20) dst = dist(data) tree = hclust(dst, method = "a") plot(tree, cex = 1) plot(tree, cex = 0.5) plot(tree, cex = 0.2) Under R-2.15 and earlier, the leaf labels would get progressively smaller; under 3.0.0, the label size remains the same. I tried this both under Windows R version 2.15.1 (2012-06-22) Platform: x86_64-pc-mingw32/x64 (64-bit) locale: [1] LC_COLLATE=English_United States.1252 [2] LC_CTYPE=English_United States.1252 [3] LC_MONETARY=English_United States.1252 [4] LC_NUMERIC=C [5] LC_TIME=English_United States.1252 attached base packages: [1] stats graphics grDevices utils datasets methods base -------------------------- Session info for R-3.0.0 R version 3.0.0 (2013-04-03) Platform: x86_64-w64-mingw32/x64 (64-bit) locale: [1] LC_COLLATE=English_United States.1252 [2] LC_CTYPE=English_United States.1252 [3] LC_MONETARY=English_United States.1252 [4] LC_NUMERIC=C [5] LC_TIME=English_United States.1252 attached base packages: [1] stats graphics grDevices utils datasets methods base and under Linux R version 3.0.0 Patched (2013-04-24 r62658) Platform: x86_64-unknown-linux-gnu (64-bit) locale: [1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C [3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8 [5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 [7] LC_PAPER=C LC_NAME=C [9] LC_ADDRESS=C LC_TELEPHONE=C [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C attached base packages: [1] stats graphics grDevices utils datasets methods base Looking at the source code of plot.hclust leads to graphics:::plotHclust which calls .External.graphics, which is where my ability to read code quickly stops :) I realize that these are not the most recent releases but I couldn't find anything mentioning a bug fix for this in the changelog, so I assume it has not been fixed. Thanks, Peter ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
