Hello R-help,
I noticed the following surprising behavior when using %in% to find elements in
a vector generated using seq().
# weird!!!
> c(7.7, 7.8, 7.9) %in% seq(4, 8, by=0.1)
[1] TRUE FALSE TRUE
# OK now
> c(7.7, 7.8, 7.9) %in% round(seq(4, 8, by=0.1), 1)
[1] TRUE TRUE TRUE
# wait, how is this different?
> c(7.7, 7.8, 7.9) %in% seq(7, 8, by=0.1)
[1] TRUE TRUE TRUE
Is there an obvious reason for this behavior which I am missing? Seems like a
bug to me...
Thanks in advance!
Vadim
> sessionInfo()
R version 2.12.0 (2010-10-15)
Platform: i386-apple-darwin9.8.0/i386 (32-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] graphics grDevices utils datasets stats methods base
other attached packages:
[1] cluster_1.13.1 nlme_3.1-97 lattice_0.19-13
loaded via a namespace (and not attached):
[1] grid_2.12.0
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