On 08/20/2018 07:49 AM, Daniel Arndt wrote:
Hence, the answer to your question is "No, the FEValuesExtractors
objects don't carry any information which FiniteElement they belong to.".
In other words, these extractors are just like indices: an index 'i'
doesn't know which array it subscripts. But when you do
my_array[i]
then the applying the index 'i' to 'my_array' results in an expression
that knows both the object operated on (the array) and the position
within it (the index).
Best
W.
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