solve() and sweep() accept dt=CellVariable

[guyer]

eq.solve(..., dt=CellVariable())

succeeds. Should it?

eq.solve(..., dt=FaceVariable())

fails with unhelpful message:

Traceback (most recent call last):
  File "<stdin>", line 1, in ?
  File "fipy/terms/term.py", line 128, in solve
matrix, RHSvector = self.__buildMatrix(var, boundaryConditions, dt)
  File "fipy/terms/term.py", line 95, in __buildMatrix
return self._buildMatrix(var, boundaryConditions, dt)
  File "fipy/terms/binaryTerm.py", line 64, in _buildMatrix
matrix, RHSvector = self.term1._buildMatrix(var, boundaryConditions, dt = dt)
  File "fipy/terms/cellTerm.py", line 121, in _buildMatrix
inline._optionalInline(self._buildMatrixIn, self._buildMatrixPy, L, var.getOld(), b, dt, coeffVectors)
  File "fipy/tools/inline/inline.py", line 10, in _optionalInline
return pythonFn(*args)
  File "fipy/terms/cellTerm.py", line 88, in _buildMatrixPy
b += Numeric.array(oldArray) * Numeric.array(coeffVectors[value']('old)) / dt
ValueError: frames are not aligned

Probably should only accept dt=scalar and provide meaningful error message for all others.

Imported from trac ticket #84, created by guyer on 09-01-2006 at 16:40, last modified: 03-15-2007 at 15:19

[guyer]

Fixed in r2051

Trac comment by guyer on 03-15-2007 at 15:19