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NDSolve::nfnan NDSolveValue::nfnan ParametricNDSolve::nfnan ParametricNDSolveValue::nfnan

NDSolve::nfnan NDSolveValue::nfnan ParametricNDSolve::nfnan ParametricNDSolveValue::nfnan

Details

  • This message is generated when the value of the NormFunction option does not have the expected form.
  • Off[message] switches off the message; On[message] switches it on. For example: Off[NDSolve::nfnan].

Examples

Basic Examples  (1)

An error occurs because None is not a valid value for the NormFunction option:

Wolfram Language code: NDSolve[{x''[t] + x[t] x[t] == 0, x[0] == {0}, x'[0] == {1}}, x, {t, 0, 1}, NormFunction -> None]

This shows a correct input:

Wolfram Language code: NDSolve[{x''[t] + x[t] x[t] == 0, x[0] == {0}, x'[0] == {1}}, x, {t, 0, 1}, NormFunction -> (Norm[#, 3]&)]