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Groups > comp.soft-sys.math.mathematica > #3656

Re: Incredible slow Plot

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Hi!

Yes, I tried

 sol=NDSolve[{eqns, cond},f,{t,0,1200}][[1]];
 Plot[Evaluate[f[t]/.sol],{t,0,1200}],

but that was a pain. Thanks to Bobby I managed to solve my speed problem:

Instead of

sol=NDSolve[{eqns, cond},f,{t,0,1200}][[1]];
Plot[Evaluate[f[t]/.sol],{t,0,1200}],

I selected the specific solutions I needed, and Set them to a variable
that then I plot:



sol=NDSolve[{eqns, cond},f,{t,0,1200}][[1]];
a=sol[[1, Something, 2]]
b=sol[[1, Something+1, 2]]

Plot[{a[t],b[t]}],{t,0,1200}],

and that was it. However I don't understand this. Was the problem the
"size" and "amount" of interpolated functions?

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Thread

Incredible slow Plot Iván Lazaro <gaminster@gmail.com> - 2011-07-09 11:43 +0000
  Re: Incredible slow Plot Peter Pein <petsie@dordos.net> - 2011-07-10 09:02 +0000
  Re: Incredible slow Plot Iván Lazaro <gaminster@gmail.com> - 2011-07-11 10:59 +0000
    Re: Incredible slow Plot David Bailey <dave@removedbailey.co.uk> - 2011-07-12 10:59 +0000
  Re: Incredible slow Plot Iván Lazaro <gaminster@gmail.com> - 2011-07-12 11:00 +0000
  Re: Incredible slow Plot DrMajorBob <btreat1@austin.rr.com> - 2011-07-12 11:00 +0000
  Re: Incredible slow Plot DrMajorBob <btreat1@austin.rr.com> - 2011-07-12 11:08 +0000
  Re: Incredible slow Plot Iván Lazaro <gaminster@gmail.com> - 2011-07-13 07:16 +0000

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