InterpolatingFunction::femdmval
Details
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- This message is generated when an InterpolatingFunction expression is evaluated outside of its domain.
- Although this message does not necessarily represent an error, extrapolation beyond the range of interpolation can give unexpected or misleading results.
- Off[message] switches off the message; On[message] switches it on. For example: Off[InterpolatingFunction::femdmval].
Examples
Basic Examples (1)
Create a solution to a PDE and evaluate the InterpolatingFunction expression outside the domain for which the solution was found:

Generally speaking, nothing is known about the solution beyond the boundary conditions. Nevertheless, this behavior can be switched off:
More information can be found in the tech note Finite Element Options for NDSolve.