R help - Mar 1999 - Bug in "example"

On my system
> version
           _                   
platform   sparc-sun-solaris2.5
arch       sparc               
os         solaris2.5          
system     sparc, solaris2.5   
status                         
status.rev 0                   
major      0                   
minor      63.3                
year       1999                
month      March               
day        6                   
language   R            

the example() function seems to have a bug.  Specifically commands such 
as
	example(layout)
fail, even though there is a layout example.   The problem seems to be 
that the example function tries to open (in this case) layout.show.R 
instead of layout.R.

I think this is because the example function is looking at the first 
column of the AnIndex file instead of the second column.  If one 
changes,
        file <- system.file(paste("R-ex", directory.sep, 
                                  AnIndex[2 * i], ".R", sep =
""), pkg = pkg,

to

        file <- system.file(paste("R-ex", directory.sep, 
                                  AnIndex[2 * i+1], ".R", sep =
""), pkg = pkg,

it seems to work for me. (Note the fix has [2 * i + 1])

Mike Meyer, Applied Statistics, The Boeing Company

(and yes, I am the same person who used to be at Carnegie Mellon)



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On Tue, 9 Mar 1999, Michael Meyer wrote:
> I think this is because the example function is looking at the first 
> column of the AnIndex file instead of the second column.  If one 
> changes,
>         file <- system.file(paste("R-ex", directory.sep, 
>                                   AnIndex[2 * i], ".R", sep =
""), pkg = pkg,
> 
> to
> 
>         file <- system.file(paste("R-ex", directory.sep, 
>                                   AnIndex[2 * i+1], ".R", sep =
""), pkg = pkg,
> 
> it seems to work for me. (Note the fix has [2 * i + 1])
This was discussed on another R list earlier today. We think the fix is 

            AnIndex <- scan(AnIndexF, what = c("c", "c"),
quiet = TRUE,
			sep="\t")

as there are names in the index with spaces in that get this read
incorrectly. The Windows versions have had this fix for some time.

This only AFAIK applies to examples in the base package.

Brian

-- 
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 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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