[Gnuplot-bugs] Bug?

[iromaieutico]

Hi,
I'm sorry for my English, but I'm italian... forgive me.

I'm using Gnuplot 4.0 on Apple Powerbook G4 Mac Os 10.5
but these same results have been obtained using other version on other
platforms and other operating sistems such Ubuntu Linux or Windows Vista.

I was working with a numerical solution of Ordinary Differential
Equation when I need to type this command:

pl [0:100] sin(x)

obtaining a very strange plot.

Then, I obtained the same problems with

pl [0:100] cos(x)

[I tried with Aquatherm and X11]

If the function domine is more restricted (for example [0:5]) there are
no problems, but defining a bigger domine gnuplot gives a very strange
plot... it's not a sinusoid and the maximums are not always 1 !

Is this a bug, or my bad use?

Thank you.


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[Tatsuro MATSUOKA-5]

Hello

Please read the help for sampling points for function by

gnuplot> help samples

Default samplig points is 100.

It is natural that the graph of pl [0:100] sin(x) is strange.
Please change the sampling  number by 'set sample ......'

Regards

Tatsuro

--- iromaieutico  wrote:

>
> Hi,
> I'm sorry for my English, but I'm italian... forgive me.
>
> I'm using Gnuplot 4.0 on Apple Powerbook G4 Mac Os 10.5
> but these same results have been obtained using other version on other
> platforms and other operating sistems such Ubuntu Linux or Windows Vista.
>
> I was working with a numerical solution of Ordinary Differential
> Equation when I need to type this command:
>
> pl [0:100] sin(x)
>
> obtaining a very strange plot.
>
> Then, I obtained the same problems with
>
> pl [0:100] cos(x)
>
> [I tried with Aquatherm and X11]
>
> If the function domine is more restricted (for example [0:5]) there are
> no problems, but defining a bigger domine gnuplot gives a very strange
> plot... it's not a sinusoid and the maximums are not always 1 !
>
> Is this a bug, or my bad use?
>
> Thank you.
>
>
> --
> La mia chiave di crittografia pubblica 将イ reperibile su
> http://pgp.mit.edu:11371/pks/lookup?search=iromaieutico%40autistici.org&op=index
> Info su
> http://www.autistici.org/it/stuff/user_howto/man_mail/privacymail.html
>
> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
> trial. Simplify your report design, integration and deployment - and focus on
> what you do best, core application coding. Discover what's new with
> Crystal Reports now.  http://p.sf.net/sfu/bobj-july
> _______________________________________________
> gnuplot-bugs mailing list
> gnuplot-bugs@...
> https://lists.sourceforge.net/lists/listinfo/gnuplot-bugs
>

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