[R] read.pnm question

[peter dalgaard]

On Mar 22, 2013, at 13:21 , Erin Hodgess wrote:

> In R-beta (Masked Marvel), when I do the example from the read.pnm help
> file, this is what happens:
> 
> x <- read.pnm(system.file("pictures/logo.pgm",package="pixmpap")[1])

"pixmpap"? Any chance of a typo?

-pd



> Warning message:
> In rep(cellres, length=2): x is NULL so the result will be NULL
> 
> In R-2.15.3, it's all right.
> 
> Thanks,
> Erin
> 
> 
> On Fri, Mar 22, 2013 at 2:13 AM, Michael Weylandt <
> michael.weylandt at gmail.com> wrote:
> 
>> 
>> 
>> On Mar 22, 2013, at 4:04, Erin Hodgess <erinm.hodgess at gmail.com> wrote:
>> 
>> Dear R People:
>> 
>> I am trying to replicate a cool example that I saw on the R-bloggers some
>> time ago by kafka399.
>> 
>> Here are the lines tI think may be  causing the trouble:
>> 
>> gray_file <- read.pnm(path)
>> 
>> pos[i,] <- c(gray_file at grey)
>> 
>> 
>> Hi Erin,
>> 
>> This is basically impossible to debug as is -- though I do note you spell
>> that color between white and black inconsistently; could you please put
>> some effort into making a true reproducible example or, at the very least,
>> linking to the project you are attempting to replicate?
>> 
>> Michael
>> 
>> 
>> http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example
>> 
>> 
>> 
>> 
>> The warning error that I get is
>> "In rep(cellres, length=2): x is NULL so the result will be NULL
>> 
>> Any suggestions would be much appreciated.
>> 
>> Thanks,
>> Sincerely,
>> Erin
>> 
>> 
>> 
>> 
>> 
>> --
>> Erin Hodgess
>> Associate Professor
>> Department of Computer and Mathematical Sciences
>> University of Houston - Downtown
>> mailto: erinm.hodgess at gmail.com
>> 
>>   [[alternative HTML version deleted]]
>> 
>> ______________________________________________
>> R-help at 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.
>> 
>> 
> 
> 
> -- 
> Erin Hodgess
> Associate Professor
> Department of Computer and Mathematical Sciences
> University of Houston - Downtown
> mailto: erinm.hodgess at gmail.com
> 
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
> R-help at 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.

-- 
Peter Dalgaard, Professor
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com