Dear R-list readers:

Royston described the effect of sample size on the p-value obtained from 
the Shapiro-Francia test (Estimating departure from normality.  Stat  Med 
1991;10:1283-93).  He developed two indices from the Shapiro-Francia 
test  (i) V'   -  an index of departure from normality and (ii) v'  -  a 
plot of the cumulative squared residuals.

He mentioned the availability (in 1991) of a Minitab macro and a Stata 
program for calculating V' and producing v' plots.  Unfortunately he no 
longer has these scripts in his computer.  Therefore I wondered if any 
reader of this list possessed R (or indeed S) versions of Royston's routines?

I have, of course, done the usual searches but only obtain references to 
Royston's own modifications of the Shapiro-Francia test itself or to other 
users of that test. Any help or advice would be gratefully received.  Thank 
you.

Ralph Henderson (ahenders@uwo.ca)
Department of Biochemistry
University of Western Ontario
London, Ontario, Canada

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