Using subset to filter data table
Ben -
droplevels was introduced in R version 2.12.0.
Since you are running version 2.10.1, it won't be
available. You might want to upgrade to a more
recent version.
- Phil Spector
Statistical Computing Facility
Department of Statistics
UC Berkeley
spector at stat.berkeley.edu
On Thu, 20 Jan 2011, Ben Harrison wrote:
Thank you Santosh.
I am so new to R that I don't even have droplevels:
1> tcc2 = droplevels(tcc)
Error: could not find function "droplevels"
I looked up ?droplevels:
1> ?droplevels
No documentation for 'droplevels' in specified packages and libraries:
you could try '??droplevels'
1> ??droplevels
Help files with alias or concept or title matching ?droplevels? using
fuzzy matching:
gdata::drop.levels Drop unused factor levels
Type '?PKG::FOO' to inspect entry 'PKG::FOO TITLE'.
However, droplevels is in the base package apparently, yet I haven't got it.
Can anyone explain this to me?
1> R.version
_
platform i486-pc-linux-gnu
arch i486
os linux-gnu
system i486, linux-gnu
status
major 2
minor 10.1
year 2009
month 12
day 14
svn rev 50720
language R
version.string R version 2.10.1 (2009-12-14)
Ben.
On 19 January 2011 19:27, Santosh Srinivas <santosh.srinivas at gmail.com>wrote:
tcc.new2 <- droplevels(tcc.new)
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