John Kane
Kingston ON Canada
-----Original Message-----
From: y_re...@hotmail.com
Sent: Fri, 5 Jul 2013 13:35:32 +0000
To: jrkrid...@inbox.com, rolf.tur...@xtra.co.nz, jdnew...@dcn.davis.ca.us
Subject: RE: [R] Data Package Query
Hello,
When I run the below syntax:
Trial<-read.table("Trial.txt",header=TRUE)
Trial
save.image(file="Trial.RData")
load("Trial.RData")
fit<-logistf(data=Trial, y~x1+x2)
summary(fit)
AIC(fit)
I am getting the below error:
> AIC(fit)
Error in UseMethod("logLik") :
no applicable method for 'logLik' applied to an object of class "logistf"
Can you please help with that?
Regards,
Yasmine
> Date: Sat, 29 Jun 2013 05:05:28 -0800
> From: jrkrid...@inbox.com
> Subject: Re: [R] Data Package Query
> To: y_re...@hotmail.com; rolf.tur...@xtra.co.nz; jdnew...@dcn.davis.ca.us
> CC: r-help@r-project.org
>
>
> I don't know what you think data(Trial) is doing but what it in fact is doing
> is trying to load a stored data set called Trial and it does not exist. Have
> a look at ?data to see what I mean.
>
> In your program data(Trial) is redundant, well actually closer to
> meaningless.
>
> Trial is already loaded since you created it in the read statement
>
> John Kane
> Kingston ON Canada
>
Well, currently not. We have no idea of what your data looks like and you have
not told us what packages you are loading , especially where the function
logistf() is coming from.
We need a better constructed question to be able to help.
Please read https://github.com/hadley/devtools/wiki/Reproducibility and
http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example
In particular I suspect that we need to see some sample data. Use dput() to
supply some. That is issue the command dput(Trial) and copy the results into
your email.
Also list any require() or library() calls.
>
> > -----Original Message-----
> > From: y_re...@hotmail.com
> > Sent: Fri, 28 Jun 2013 12:31:11 +0000
> > To: rolf.tur...@xtra.co.nz, jdnew...@dcn.davis.ca.us
> > Subject: Re: [R] Data Package Query
> >
> > hello,
> >
> > please advice what is wrong at the below syntax:
> > "Trial<-read.table("Trial.txt",header=TRUE)
> > Trial
> > save.image(file="Trial.RData")
> > data(Trial)
> > fit<-logistf(data=Trial, y~x1+x2)
> > "
> >
> > and here is the error I get:
> > "Warning message:
> > In data(Trial) : data set ?Trial? not found
> > "
> >
> > regards,
> > yasmine
> >
> >
> >> Date: Fri, 28 Jun 2013 10:29:21 +1200
> >> From: rolf.tur...@xtra.co.nz
> >> To: jdnew...@dcn.davis.ca.us
> >> CC: y_re...@hotmail.com; r-help@r-project.org
> >> Subject: Re: [R] Data Package Query
> >>
> >> On 28/06/13 04:47, Jeff Newmiller wrote:
> >>
> >> <SNIP>
> >>> A common error by beginners (which may or may not be your problem in
> >>> this case) is to create a variable called "data". Unfortunately this
> >>> hides the function named "data" and from that time forward that R
> >>> session doesn't work when you type example code that uses the data
> >>> function.
> >>
> >> <SNIP>
> >>
> >> This is simply not true. I believe it *used* to be true, sometime
> >> waaaaayyyy back,
> >> but hasn't been true for years. The R language is much cleverer now.
> >> If there
> >> is a function "melvin()" somewhere on the search path and also a data
> >> object
> >> "melvin" (earlier on the search path) then doing
> >>
> >> melvin(<whatever>)
> >>
> >> will correctly call the function melvin() with no complaints. The R
> >> language
> >> "can tell" by the parentheses that you mean the *function* melvin and
> >> not the
> >> data object "melvin".
> >>
> >> E.g.
> >>
> >> data <- 42
> >> require(akima)
> >> akima
> >> Error: object 'akima' not found
> >> data(akima) # No error message, nor nothin'!
> >> akima
> >> # The data set "akima" is displayed.
> >>
> >> All that being said it is ***BAD PRACTICE***, just in terms of
> >> comprehensibility
> >> and avoiding confusion, to give a data set set the same name as a
> >> function
> >> (either built in, or one of your own).
> >>
> >> fortune("dog")
> >>
> >> is relevant.
> >>
> >> cheers,
> >>
> >> Rolf Turner
> >>
> >
> > [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-help@r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide
> > http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
>
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