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: jrkrideau@inbox.com
> Subject: Re: [R] Data Package Query
> To: y_refai@hotmail.com; rolf.turner@xtra.co.nz; jdnewmil@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
> 
> 
> > -----Original Message-----
> > From: y_refai@hotmail.com
> > Sent: Fri, 28 Jun 2013 12:31:11 +0000
> > To: rolf.turner@xtra.co.nz, jdnewmil@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.turner@xtra.co.nz
> >> To: jdnewmil@dcn.davis.ca.us
> >> CC: y_refai@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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