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NDSolve::uniss NDSolveValue::uniss ParametricNDSolve::uniss ParametricNDSolveValue::uniss

NDSolve::uniss NDSolveValue::uniss ParametricNDSolve::uniss ParametricNDSolveValue::uniss

Details

  • This message is generated when the indicated option values restrict the step size in a way that is not commensurate with the interval for the corresponding variable.
  • Off[message] switches off the message; On[message] switches it on. For example: Off[NDSolve::uniss].

Examples

Basic Examples  (1)

A warning message is generated because NDSolve does not use a step size that satisfies the restrictions indicated by the options:

Wolfram Language code: NDSolve[{D[u[x, t], t] == D[u[x, t], x, x], u[x, 0] == Exp[-100 x ^ 2], u[-1, t] == u[1, t]}, u, {x, -1, 1}, {t, 2}, Method -> {"MethodOfLines", "SpatialDiscretization" -> {"TensorProductGrid", MaxStepSize -> .003, MinStepSize -> .003}}]