Dear All
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))
plot(hc)
identify(hc)
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.
> sessionInfo()
R version 2.15.1 (2012-06-22)
Platform: x86_64-pc-mingw32/x64 (64-bit)
locale:
[1] LC_COLLATE=English_United Kingdom.1252 LC_CTYPE=English_United
Kingdom.1252 LC_MONETARY=English_United Kingdom.1252 LC_NUMERIC=C
[5] LC_TIME=English_United Kingdom.1252
attached base packages:
[1] grid stats graphics grDevices utils datasets methods base
other attached packages:
[1] 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
[10] 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):
[1] 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
Thanks
Mick
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Scotland, with registration number SC005336.
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