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From: "Charles T. Smith" <cts.private@yahoo.com>
Newsgroups: comp.graphics.apps.gnuplot
Subject: Re: fatal precision problem in gnuplot or fatal operator incompetence?
Date: Sat, 28 Apr 2012 16:45:56 +0200
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On 04/28/12 16:33, Brendan Halpin wrote:
> On Sat, Apr 28 2012, 3031-866 wrote:
>
>> On 04/28/12 12:25, Charles T. Smith wrote:
>>> Why does:
>>>
>>> plot [0:1000] sin(x)
>>>
>>> seem to be modulated with what appears to be a sine wave?
>>
>>
>> Could this have anything to do with the fact that when I plot:
>>
>>
>> gnuplot>  set parametric
>> gnuplot>  set size square
>> gnuplot>  r(t) = 1 - exp(-0.25*t/pi)   # the radius as function of t
>> gnuplot>  plot [0:25*pi][-1.1:1.1][-1.1:1.1] r(t)*cos(t), r(t)*sin(t)
>>
>> (from Gnuplot In Action, by Philipp K. Janert)
>>
>> I get a spiral of straight lines rather than a curving spiral, as shown
>> in the book?
>
> Yes, exactly so. Insert "set samples 10000" and you'll get your spiral.
>
>>
>> Is this a reason to be using 64 bit linux?
>
> No.
>
> Brendan
>


Thank you for the complete and concise answers.