From maechler at stat.math.ethz.ch  Thu Jun 15 17:36:35 2017
From: maechler at stat.math.ethz.ch (Martin Maechler)
Date: Thu, 15 Jun 2017 17:36:35 +0200
Subject: [Rd] "factor now uses order() to sort its levels" not yet in R
	3.4.0
In-Reply-To: <1417410960.9617550.1497460658946@mail.yahoo.com>
References: <1417410960.9617550.1497460658946.ref@mail.yahoo.com>
 <1417410960.9617550.1497460658946@mail.yahoo.com>
Message-ID: <22850.43395.740099.999868@stat.math.ethz.ch>

>>>>> Suharto Anggono Suharto Anggono <suharto_anggono at yahoo.com>
>>>>>     on Wed, 14 Jun 2017 17:17:38 +0000 writes:

 [............quite important stuff, taking _longer_ to reply .......]

    > ? ? > By the way, in NEWS, in "CHANGES IN R 3.4.0", in "SIGNIFICANT USER-VISIBLE CHANGES", there is "factor() now uses order() to sort its levels". It is false. Code of function 'factor' in R 3.4.0 (https://svn.r-project.org/R/tags/R-3-4-0/src/library/base/R/factor.R) still uses 'sort.list', not 'order'.

Thanks a lot for spotting and mentioning this!
I have now moved the entry to the NEW FEATURES of 'R devel'.

It could also go to 'R 3.4.0 patched --- to become R 3.4.1 at
around "useR! 2017" --- but it was not my change so don't know
how important or how "dangerous" the change is, so would leave
this to my R core colleague (BCC ed).

Martin



[Rd] "factor now uses order() to sort its levels" not yet in R 3.4.0
Martin Maechler