Mathematica 9 is now available
Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
1994
*January
*February
*March
*April
*May
*June
*July
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 1994

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Question in ParametricPlot

  • To: mathgroup at christensen.cybernetics.net
  • Subject: [mg236] Re: [mg227] Question in ParametricPlot
  • From: twj (Tom Wickham-Jones)
  • Date: Mon, 28 Nov 1994 08:30:55 -0600

 Xah Lee writes...


>Here is a problem I have that calls for knowing the internal  
algorithm 

>used for ParametricPlot. When we do a ParametricPlot, mma  
automatically 

>figures out which t to use to produce a smooth curve. I need the  
list of 

>t(s) used. Is there a way to get them?

One simple way to get the points that are used in Plot is to save  
them
as the function is evaluated.


pts = {}

Plot[ AppendTo[ pts, t]; Sin[t], {t,0,2}]

for Plot.  Or 


pts = {}

ParametricPlot[ AppendTo[ pts, t]; {Sin[t], Cos[t]},{t,0,2Pi}]

After either of these pts contains the points that were evaluated by
the Plot command.

Tom Wickham-Jones
WRI






  • Prev by Date: Troubles with calculations using HP-UX notebook interface
  • Next by Date: Re: Mathematica materials for Chemistry
  • Previous by thread: Re: Question in ParametricPlot
  • Next by thread: RE: Negative Area: Definitive Answer (not)