[R] identify.hclust() doesn't cut tree at the vertical position of the mouse pointer
mick.watson at roslin.ed.ac.uk
Tue Jul 10 10:48:18 CEST 2012
According to the identify.hclust documentation the function "cuts the tree at the vertical position of the pointer and highlights the cluster containing the horizontal position of the pointer".
When I carry out this, the tree isn't cut where I click - in fact, there seems to be a limit below which I cannot go.
Consider the following code:
mat <- matrix(rnorm(5000), ncol=5)
hc <- hclust(dist(mat))
No matter where I click on the tree, I cannot cut below around about 5. I can cut above that value, but not below.
Any help is much appreciated.
R version 2.15.1 (2012-06-22)
Platform: x86_64-pc-mingw32/x64 (64-bit)
 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:
 grid stats graphics grDevices utils datasets methods base
other attached packages:
 geneplotter_1.34.0 lattice_0.20-6 annotate_1.34.1 AnnotationDbi_1.18.1 Biobase_2.16.0 BiocGenerics_0.2.0 BiocInstaller_1.4.7 gplots_2.11.0 MASS_7.3-18
 KernSmooth_2.23-7 caTools_1.13 bitops_1.0-4.1 gdata_2.11.0 gtools_2.7.0
loaded via a namespace (and not attached):
 DBI_0.2-5 IRanges_1.14.4 RColorBrewer_1.0-5 RSQLite_0.11.1 stats4_2.15.1 tools_2.15.1 XML_3.9-4.1 xtable_1.7-0
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