Message-ID: <1581B7E6-2FB6-4E76-9028-3A5B0DAD3D4B@comcast.net>
Date: 2008-10-01T03:39:36Z
From: David Winsemius
Subject: Weibull distribution
In-Reply-To: <A5722AA0260E414D945649DED23EDF8E01B41F5F@TDASN140.tedrive.org>
Doing a search on:
weibull and "probability plot" ,,,,along with... r-help
in Google produced this reply which I think gives a worked example
that fits some of your hopes.
http://tolstoy.newcastle.edu.au/R/help/03b/1714.html
I am not sure what the B<N>'s are however. If they are quantiles. I am
not sure how meaningful a 95th quantile estimate would be for a sample
with only 6 instances.
--
David Winsemius
On Sep 30, 2008, at 7:24 AM, Hoeks, Luis wrote:
>
> Hello r-project team,
> I am new (test) user of R and I need some help. Sorry to wrote in
> German before, I am just a newbee to this mailing list. I would like
> to calculate and plot a Weibull distribution (Weibull best-fit line,
> accuracy curves left and right beside the best-fit line) for a
> simple set of data points. I need the shape and the scale parameter
> for the best-fit and values like B5, B10, B50, B90, B95. Usually I
> have 6-20 data points, f.e. force [N] from from a tensile test. I
> was thinking that for this kind of task there are ready-to-go R-
> progams/scripts or maby a small how-to that guides me through this
> subject.
> Any help is very much appreciated!
> Regards
> Luis
>
> -----Urspr?ngliche Nachricht-----
> Von: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] Im Auftrag von Hoeks, Luis
> Gesendet: Dienstag, 30. September 2008 11:23
> An: r-help at r-project.org
> Betreff: [R] Weibull Verteilung
>
> Hallo r-Projekt Team,
>
> ich bin Anf?nger in R und k?nnte ein wenig Hilfe gebrauchen. Ich
> m?chte eine Weibullverteilung (Weibullgerade und Genauigkeitskurven)
> berechnen und plotten. Au?erdem ben?tige ich den Formfaktor, den
> Skalierungsfaktor und Werte wie B5, B10, B50, B90, B95. In der Regel
> habe ich 6-20 Datenpunkte, z.B. aus Bruchlastversuchen. Ich kann mir
> Vorstellen, dass es daf?r schon fertige Scripte oder How-Tos
> existieren, habe aber beim googeln nichts gefunden.
>
> W?re nett, wenn mir jemand hier einen Ansto? geben k?nnte.
>
> Gru?
>
> Luis
>
>
>
>
> [[alternative HTML version deleted]]
>
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