[R] Debugging issues encountered during the "R CMD check" process

[Duncan Murdoch]

On 07/01/2010 2:48 PM, Jason Rupert wrote:
> I read through the "Writing R Extensions" and the "Debugging in R" website (http://www.stats.uwo.ca/faculty/murdoch/software/debuggingR/), looking for some hints about how to solve the issue of debugging problems encountered during the "R CMD check" process, but nothing seems to be mentioned about addressing issues encountered. 
>
> Specifically, I am working with the R signal package which is hosted at the following location:
> http://code.google.com/p/r-signal/
>
> I would like to debug the problem that is shown below, and is encountered when I run "R CMD check signal". 
>
> Thank you for any insights that are provided as the R signal package is nice and it would be good to have it working again with R 2.9.x and beyond. 
>
> Thank you again for the help. 
>
> >From the 00check.log
>
> * using log directory '/Users/jasonkrupert/Documents/RStuff/Rsignal/r-signal/signal.Rcheck'
> * using R version 2.9.2 (2009-08-24)
> * using session charset: UTF-8
> * checking for file 'signal/DESCRIPTION' ... OK
> * checking extension type ... Package
> * this is package 'signal' version '0.6'
> * checking package dependencies ... OK
> * checking if this is a source package ... WARNING
> ....
> ....
> ....
> > 
> > ### Name: interp
> > ### Title: Interpolate / Increase the sample rate
> > ### Aliases: interp
> > ### Keywords: math
> > 
> > ### ** Examples
> > 
> > 
> > # The graph shows interpolated signal following through the
> > # sample points of the original signal.
> > t = seq(0, 2, by = 0.01)
> > x = chirp(t,2,.5,10,'quadratic') + sin(2*pi*t*0.4)
> > y = interp(x[seq(1, length(x), by = 4)],4,4,1)   # interpolate a sub-sample
> Warning in rbind(x, array(val, dim = c(n - nx, NCOL(x)))) :
>   number of columns of result is not a multiple of vector length (arg 1)
> Warning in Fft(postpad(x, N)) * B :
>   longer object length is not a multiple of shorter object length
> Error in ifft(Fft(postpad(x, N)) * B) : 
>   dims [product 36] do not match the length of object [256]
> Calls: interp -> fftfilt -> fftfiltx -> ifft
> Execution halted
>
>   

You'll often get more informative error messages in recent R releases if 
you set the environment variable

R_KEEP_PKG_SOURCE=yes

I don't know if it will help in this case.

Duncan Murdoch