Re: [Gnuplot-info] All points y value undefined...

[Hans-Bernhard B. <HBB...@t-...>]

Julien Derr wrote:
> Hi everyone,
> I am trying to plot the gamma function, and have this error message....
> 
> gnuplot> plot 0.6*gamma(101)*gamma(100.6-x)/ 
> (gamma(100+0.6+1)*gamma(100-x+1))
>                                                                               ^
>           all points y value undefined!
> 

What was the x range?  What version of gnuplot ("show version long" 
output would be nice) is this?

> I can't believe this is not defined ! 

It very well might be.  Let me show you why:

gnuplot> print gamma(101)
9.33262154439422e+157
gnuplot> print gamma(101)**2

gnuplot> print gamma(101)**2
                ^
          undefined value

gamma is a *rapidly* growing function, and your computer has a finite 
range of values it can represent.