R-beta: Various R Questions and Comments
Peter Dalgaard BSA
p.dalgaard at biostat.ku.dk
Mon Feb 16 18:03:55 CET 1998
morse at pobox.com (Doug Morse) writes:
> I've been using R for about nine months now -- it's great. Nicely done!
> Here are some questions / comments I have. Some are trivialities, but I
> thought I'd mention them anyway. Others are a bit more involved. BTW,
> I run R (Version 0.61.1 Alpha) on RedHat Linux 4.1
> 1. Interrupt Key
> How is one supposed to interrupt a command? In S-Plus, one uses
> the 'Escape' key. In R, I can press my terminal's Interrupt
> key (Ctrl-C), but this only works *once*. After that, the event
> seems to get ignored. This is a nuicance for two reasons: (a) I
> can't interrupt a command but once in a session, and (b) at the
> "> " prompt, I can't press Ctrl-C to abort my many typing errors
> but once a session as well.
This is a bug in the readline library. Upgrade to 2.1/3.0.
> 2. Sourcing MS-DOS Files
> I also use R on my laptop (Win95) and often transfer files
> back and forth between it and my linux host. R doesn't
> seem to like this much -- I always have to convert [newlines]
> to [newlines-carriage returns] and back. Not a big deal, but
> a bit annoying. Could 'source' not be modified to auto-detect
> end-of-line method?
Probably, but you could also make a habit of copying your files with
mcopy -t ...
> 3. Coercing Types within a DataFrame
> This is a more serious problem. In S-Plus, I can run:
> myframe <- read.table('mydata.dat', T);
> myframe[, 'Steps'] <- as.factor(myframe[, 'Steps']);
That looks like a bug. However, this works:
and upcoming versions will allow:
> 4. Anovalist.lm
> For example, the following should be allowed:
> Analysis of Variance Table
> Model 1: Satisfaction + Age ~ Anxiety
> Model 2: Satisfaction ~ Age + Severity + Anxiety
> Res.Df Res.Sum-Sq Df Sum-Sq F Pr(>F)
> 1 21 2152
> 2 19 2012 2 139.9 0.6609 0.5279
> It represents a test of whether beta1 = -1.0 and beta2 = 0.0
> using the generalized linear test statistic (see "Applied
Wouldn't this be better done using offsets?
> 5. AOV
> Any word on 'aov' and friends? Or alternatively, getting 'lm' (and
Ross has been talking about it for a while now. Doug Bates has done
some work on lme() and is close to having something releasable there.
O__ ---- Peter Dalgaard Blegdamsvej 3
c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch
More information about the R-help