Re: Increased Precision in Plot?
- To: mathgroup at smc.vnet.net
- Subject: [mg34692] Re: [mg34684] Increased Precision in Plot?
- From: "Johannes Ludsteck" <johannes.ludsteck at wiwi.uni-regensburg.de>
- Date: Sat, 1 Jun 2002 04:28:54 -0400 (EDT)
- Organization: Universitaet Regensburg
- Sender: owner-wri-mathgroup at wolfram.com
Dear Selwyn,
the option PlotDivision->anInteger should solve your problem.
See the Help for PlotDivision or type
?PlotDivision
Best regards,
Johannes Ludsteck
On 31 May 2002, at 4:30, Selwyn Hollis wrote:
> The command
>
> f[t_]=Nest[1 - Integrate[2s(#/.t->s),{s, 0, t}]&, Cos[t],
> 12]//Simplify
>
> returns a fairly innocent-looking result. However, evaluation (or
> plotting) of the result with default precision produces garbage; for
> example:
>
> In[1]:= f[.5]
> Out[1]:= 0.875
>
> In[2]:= N[f[1/2]]
> Out[2]:= 0.625
>
> In[3]:= N[f[1/2],17]
> Out[3]:= 0.77880078307140487
>
> My question is this: How can I get Plot to graph such a function with
> increased precision, so that the graph isn't overwhelmed by noise?
>
> Thanks in advance,
>
> Selwyn Hollis
>
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Johannes Ludsteck
Economics Department
University of Regensburg
Universitaetsstrasse 31
93053 Regensburg
Phone +49/0941/943-2741