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    NDSolve`FEM`

    ElementMesh::fembdct

    Details

    • This message is generated in the case that the coordinates of an ElementMesh are not real numbers.
    • This error can be avoided by making sure that the coordinates given during the mesh creation process are real.
    • Off[message] switches off the message; On[message] switches it on. For example: Off[ElementMesh::fembdct].

    Examples

    Basic Examples  (3)

    A symbol in the coordinates without a value can cause this error:

    Wolfram Language code: Needs["NDSolve`FEM`"]
    Wolfram Language code: ToElementMesh["Coordinates" -> {{0, 0}, {1, 0}, {1, 1}, {0, a}}, "MeshElements" -> {QuadElement[{{1, 2, 3, 4}}]}]

    Specifying a real value for the symbol a fixes the error:

    Wolfram Language code: a = 1; ToElementMesh["Coordinates" -> {{0, 0}, {1, 0}, {1, 1}, {0, a}}, "MeshElements" -> {QuadElement[{{1, 2, 3, 4}}]}]

    In the case when complex valued coordinates are given, the same message is issued:

    Wolfram Language code: ToElementMesh["Coordinates" -> {{0, 0}, {1, 0}, {1, 1}, {0, 1}} + I, "MeshElements" -> {QuadElement[{{1, 2, 3, 4}}]}]

    This message can be generated by other functions:

    Wolfram Language code: ToBoundaryMesh["Coordinates" -> {{0, 0}, {1, 0}, {1, 1}, {0, b}}, "BoundaryElements" -> {LineElement[{{1, 2}, {2, 3}, {3, 4}, {4, 1}}]}]