Math::erfinv inverse error function

[Bil Kleb]

Hi,

Does anyone know where to find a Ruby /inverse/ error function?^1

Thanks,

 

[Axel Etzold]

-------- Original-Nachricht --------

Datum: Sat, 14 Jun 2008 10:04:25 +0900
Von: Bil Kleb <[email protected]>
An: (e-mail address removed)
Betreff: Math::erfinv inverse error function

Hi,

Does anyone know where to find a Ruby /inverse/ error function?^1

Thanks,
--
Bil kleb
http://fun3d.larc.nasa.gov

[1] See for example http://en.wikipedia.org/wiki/Error_function

Dear Bill,

you can use Shin-ichiro Hara's statistics2 package

http://raa.ruby-lang.org/project/statistics2/ .

It has functions for calculating the integral of the Normal Function and its inverse, and then there
is the following relation from the Wikipedia article you cited:


Another option would be to use the rsruby interface to the R statistical language.

http://rubyforge.org/projects/rsruby/
http://www.r-project.org/

Best regards,

Axel

 

[Bil Kleb]

you can use Shin-ichiro Hara's statistics2 package

http://raa.ruby-lang.org/project/statistics2/ .

Excellent; thanks.

Another option would be to use the rsruby interface to the R statistical language.

Unfortunately, I've never managed to get R installed on
my OS X box. I haven't honestly tried harder than sudo
port install.

Thanks again,