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| From | Nick Cox <njcoxstata@gmail.com> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | Re: st: -qenv- updated on SSC |
| Date | Thu, 14 Feb 2013 19:44:00 +0000 |
The latest code for -qplot- is at
SJ-12-1 gr42_6 . . . . . . . . . . . . . . . . . . Software update for qplot
(help qplot if installed) . . . . . . . . . . . . . . . . . N. J. Cox
Q1/12 SJ 12(1):167
provides better handling of y-axis titles
but a -search- will give links to various articles.
Nick
On Thu, Feb 14, 2013 at 7:38 PM, Nick Cox <njcoxstata@gmail.com> wrote:
> Thanks to Kit Baum as usual, the -qenv- package has been revised on
> SSC. For the original announcement, see
>
> http://www.stata.com/statalist/archive/2012-03/msg00896.html
>
> A summary is that -qenv- contains two programs, -qenvnormal- and
> -qenvgamma-, which calculate envelopes conveying the uncertainty on
> quantile-quantile plots assessing the fit of data to the normal [sc.
> Gaussian] and gamma distributions respectively. Plotting is not
> provided, as -qplot- (-search- for locations) already exists as a
> fairly general quantile plotting command.
>
> Please note in particular that there is no -qenv- command or help
> file. -ssc desc qenv- will give the precise details of the files
> included and Stata versions required.
>
> The interesting part of the update is the addition of an -overall-
> option specifying that an envelope with an approximate overall error
> rate of 100 - level is to be computed instead of a pointwise error
> rate of approximately 100 - level. The associated code was written by
> Maarten Buis.
>
> I am therefore very pleased to welcome Maarten as coauthor of the package.
>
> Focus on the Gaussian and the gamma is not to be interpreted as a lack
> of interest, concern, affection or respect for any other distribution
> hitherto discussed or yet to be invented. That's all we've written.
> *
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> * http://www.stata.com/help.cgi?search
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*
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