Question on Rprof(); was: Re: [R] sapply and loop

[Zhen Pang]

Yes. It should have something to do with read/write permissions, but it is 
not clear how it happens.

I can write file to C drive using R. I usually write my results matrix to a 
txt file in C drive.

For Rprof(), the boot.out file can be created, but only with one line

sample.interval=20000

The situation is the same even if I specify the directory to the D 
drive,where I have the full read/write permissions.

Anyway, I do success in my own laptops. Thanks.

Yours,

Zhen

>From: Uwe Ligges <ligges at statistik.uni-dortmund.de>
>To: Zhen Pang <nusbj at hotmail.com>
>CC: tlumley at u.washington.edu, ripley at stats.ox.ac.uk, 
>r-help at stat.math.ethz.ch
>Subject: Question on Rprof(); was: Re: [R] sapply and loop
>Date: Tue, 19 Oct 2004 09:54:39 +0200
>
>Zhen Pang wrote:
>
>>I am sorry for neglecting the acknowledgement for `Writing R Extensions', 
>>since I think I am just citing the code from the orignal R-help. I fail to 
>>get the results when I use my own code. So I refer to this code where 
>>Rprof() appears. Anyway, I am sorry for this.
>>
>>In fact, I have tried to whether I specify boot.out. Neither one works.
>
>Do you have read/write permissions? R-1.8.1 is pretty old. Please upgrade.
>
>
>
>BTW: Rprof() to a non-existing directory
>    Rprof("c:/DoesNotExist/temp.out")
>under R-2.0.0, Windows, results in the GUI information message:
>"Fatal error: can't open profile file", and R is closed afterwards.
>
>I think we should change this behaviour to a simple error message by adding 
>the lines
>
>  if(!file.exists(dirname(filename)))
>      stop("Cannot open file ", filename)
>
>just before
>
>  invisible(.Internal(Rprof(filename, append, interval)))
>
>
>
>Uwe Ligges
>
>
>
>>Rprof("boot.out")
>>     storm.boot <- boot(rs, storm.bf, R = 4999) # pretty slow
>>      Rprof(NULL)
>>
>>summaryRprof()
>>Error in summaryRprof() : no events were recorded
>>
>>summaryRprof("boot.out")
>>Error in summaryRprof("boot.out") : no events were recorded
>>
>>     Rprof()
>>     storm.boot <- boot(rs, storm.bf, R = 4999) # pretty slow
>>      Rprof(NULL)
>>
>>summaryRprof()
>>Error in summaryRprof() : no events were recorded
>>
>>
>>Zhen
>>
>>
>>>From: Prof Brian Ripley <ripley at stats.ox.ac.uk>
>>>To: Zhen Pang <nusbj at hotmail.com>
>>>CC: tlumley at u.washington.edu, r-help at stat.math.ethz.ch
>>>Subject: Re: [R] sapply and loop
>>>Date: Tue, 19 Oct 2004 07:29:54 +0100 (BST)
>>>
>>>On Tue, 19 Oct 2004, Zhen Pang wrote:
>>>
>>> > I tried to use Rprof(). As an example, I consider the following code 
>>>(from
>>> > Venables & Ripley, 1999).
>>>
>>>I believe you parroted that from `Writing R Extensions', but failed to
>>>give proper credit!
>>>
>>> >      library(MASS); library(boot); library(nls)
>>> >      data(stormer)
>>> >      storm.fm <- nls(Time ~ b*Viscosity/(Wt - c), stormer,
>>> >                      start = c(b=29.401, c=2.2183))
>>> >      st <- cbind(stormer, fit=fitted(storm.fm))
>>> >      storm.bf <- function(rs, i) {
>>> >          st$Time <-  st$fit + rs[i]
>>> >          tmp <- nls(Time ~ (b * Viscosity)/(Wt - c), st,
>>> >                     start = coef(storm.fm))
>>> >          tmp$m$getAllPars()
>>> >      }
>>> >      rs <- scale(resid(storm.fm), scale = FALSE) # remove the mean
>>> >      Rprof("boot.out")
>>> >      storm.boot <- boot(rs, storm.bf, R = 4999) # pretty slow
>>> >      Rprof(NULL)
>>>
>>>At this point your unacknowledged copying went adrift.
>>>
>>> > summaryRprof()
>>> > Error in summaryRprof() : no events were recorded
>>> >
>>> > I am using R1.8.1 in windows. Why can't I get the results?
>>>
>>>Because you didn't do your homework, and didn't even follow your source.
>>>The 'file' arguments of Rprof and summaryProf have to agree: see their
>>>help pages (as the posting guide asks).
>>>
>>>--
>>>Brian D. Ripley,                  ripley at stats.ox.ac.uk
>>>Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
>>>University of Oxford,             Tel:  +44 1865 272861 (self)
>>>1 South Parks Road,                     +44 1865 272866 (PA)
>>>Oxford OX1 3TG, UK                Fax:  +44 1865 272595
>>>
>>>______________________________________________
>>>R-help at stat.math.ethz.ch mailing list
>>>https://stat.ethz.ch/mailman/listinfo/r-help
>>>PLEASE do read the posting guide! 
>>>http://www.R-project.org/posting-guide.html
>>
>>
>>______________________________________________
>>R-help at stat.math.ethz.ch mailing list
>>https://stat.ethz.ch/mailman/listinfo/r-help
>>PLEASE do read the posting guide! 
>>http://www.R-project.org/posting-guide.html
>
>______________________________________________
>R-help at stat.math.ethz.ch mailing list
>https://stat.ethz.ch/mailman/listinfo/r-help
>PLEASE do read the posting guide! 
>http://www.R-project.org/posting-guide.html