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Re: Incredible slow Plot

• To: mathgroup at smc.vnet.net
• Subject: [mg120174] Re: Incredible slow Plot
• From: Iván Lazaro <gaminster at gmail.com>
• Date: Mon, 11 Jul 2011 06:58:03 -0400 (EDT)
• References: <iv9etb$dg1$1@smc.vnet.net>

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?

• Follow-Ups:
  • Re: Incredible slow Plot
    • From: DrMajorBob <btreat1@austin.rr.com>
  • Re: Incredible slow Plot
    • From: DrMajorBob <btreat1@austin.rr.com>