No extrapolation warning on Plot
- To: mathgroup at smc.vnet.net
- Subject: [mg112951] No extrapolation warning on Plot
- From: Simon Pearce <Simon.Pearce at nottingham.ac.uk>
- Date: Thu, 7 Oct 2010 03:37:36 -0400 (EDT)
Hi Mathgroup,
I've found that Plot often doesn't let me know when it is extrapolating
outside an interpolating function's domain. For example,
sub1 = =
NDSolve[{y''[x]+y[x]==0,y[0]==1,y'[0]==0},y,{x,0,1}];
sub2 = =
NDSolve[{y''[x]+y[x]==0,y[0]==1,y'[0]==0},y,{x,0,0.05}];
Plot[{y[x]/.sub1,y[x]/.sub2},{x,0,1}]
Here Plot has extrapolated wildly, but no warning message occurs.
Thanks,
Simon
=
This message and any attachment are intended solely for the addressee a=
nd may contain confidential information. If you have received this mess=
age in error, please send it back to me, and immediately delete it. P=
lease do not use, copy or disclose the information contained in this me=
ssage or in any attachment. Any views or opinions expressed by the aut=
hor of this email do not necessarily reflect the views of the Universit=
y of Nottingham.=0D=0A=0D=0AThis message has been checked for viruses b=
ut the contents of an attachment=0D=0Amay still contain software viruse=
s which could damage your computer system:=0D=0Ayou are advised to perf=
orm your own checks. Email communications with the=0D=0AUniversity of N=
ottingham may be monitored as permitted by UK legislation.=