Re: gnuplot numerical errors on Intel MacBook

[Daniel J S. <dan...@ie...>]

CM wrote:
> I'm sorry.  I should have provided more information.
> 
> Version of GNUPlot:
> 
> 4.0 (from fink on Tiger, MacBook Pro)
> 4.1 (from cvs today, same platform)
> 
> gamma(x) is returning all negative values, and very, very large ones at
> that.  I have included two images, one with the auto-scaling that gnuplot
> usually gives, another with [0:5] [0:100].  As you can see, the results are
> quite simply wrong.

No doubt.


> These are compiled for X11, and the behavior is independent of the terminal
> setting.

When you do ./configure, are you getting this?

checking for gamma... yes
checking for lgamma... yes

It could be that you don't have the math library where the gamma function resides and gnuplot is falling back on it's own internal versions, for which the #defines look slightly convoluted.


> Thanks!  Once again, sorry for the brief email I sent previously; as I was
> writing it, I discovered that my 3-year-old had just finished very quietly
> cutting her own hair with some nail scissors, and I had to run really fast.
> It's amazing how fast she can be when she's doing something she is *not*
> asked to do....

Ah, but did you specifically ask her to not do that.  You see, there's a big difference there.

Dan