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I have tried to do some capability studies using SixSigma package with function: ss.study.ca(). However I get an error:

Error: Unknown parameters: binwidth

Even trying the example:

ss.study.ca(ss.data.ca$Volume, rnorm(40, 753, 3), 
            LSL = 740, USL = 760, T = 750, alpha = 0.05, 
            f.sub = "Winery Project")

is not working as well and gives the same error

does anyone have the same problem with SixSigma package?

Additionally I have tried to go for qcc package and i found there is a function for process capability six-pack plots (process.capability.sixpack()). This function is stated in the publication http://www.stat.unipg.it/luca/Rnews_2004-1-pag11-17.pdf but not available at the moment ...

What kind of package would help me to perform the capability studies?

Thanks for any help

Mal_a
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    I think you will have to contact the Six Sigma folks on this one, they make a call to `stat_density` with the `binwidth` parameter, which I am guessing was once ok but now is not. – steveb Jan 26 '16 at 08:14
  • Kids, these days. Can't seem to use a search engine: https://www.r-project.org/doc/Rnews/Rnews_2004-1.pdf – IRTFM Jan 26 '16 at 08:18
  • Exactly i have tried `qcc` package, however the process capability six-pack plots, (`process.capability.sixpack()`) which i need is somehow not available any more – Mal_a Jan 26 '16 at 08:25

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