fix minor regressions introduced with !86

• DataHandling.array_like did not preserve staggeredness.
• Printing a staggered FieldAccess sometimes threw errors because of int vs. numpy.int64.
• Accessing an invalid staggered neighbor did not produce a good error message.
• I had reversed the index convention so that it was inconsistent with the documentation of create_staggered_kernel.

changed the description

added 1 commit

• 10fe510f - fix minor regressions introduced with staggered field access

Compare with previous version

changed the description

You probably want to use sympy.sympify instead of int. That will also work if you use symbols for the offsets.

Edit: sympify does not work with np.int. But you maybe still want allow Sympy symbols that are not concrete numbers.

These numbers come from direction_string_to_offset, which always returns a numpy.array(..., dtype=numpy.int64). So there is no way to make a symbol appear here.

added 1 commit

• c755fd28 - Restore staggered index convention

Compare with previous version

changed the description

merged

mentioned in commit a723120e