Weibull

[schtroumpfreestyle]

Dear gentlemen,
I would like to know if it is possible to generate a weibull plot
using sysquake?
I saw in the help, that you can change the axis and make a xlog ylog
axis.
But what about to change the vertical axis by log e(log e(1/1-p))
where p = (i-0.3)/(n+0.4) ?

Thank you in advance for your help.
Any other comment about Weibull and sysquake are more than welcome.

Best regards
Stephan

[Yves Piguet]

On 29 juin 09, at 10:30, schtroumpfreestyle wrote:

> I would like to know if it is possible to generate a weibull plot
> using sysquake?
> I saw in the help, that you can change the axis and make a xlog ylog
> axis.

No, there is no support for weibull plots, and no way to define an
arbitrary mapping for the scale. You can define a proportional factor
with scalefactor (useful when the units used in your code differ from
those displayed in graphics), or have logarithmic or dB scale as you've
noticed.

> Any other comment about Weibull and sysquake are more than welcome.

The Weibull cumulative distribution can be computed with cdf. You
could apply the mapping yourself, but then the labels won't be
what you want.

Best regards,

Yves

[schtroumpfreestyle]

Thank you very much for your reply.
I will explore your suggestions.

Regards
Stephan