[Octave-bug-tracker] [bug #65553] stream2 doesn't extend matrices like matlab

[Hg200]

Follow-up Comment #3, bug #65553 (group octave):

In the stream2 and stream3 functions, the "x,y" arguments are reduced to the
vectors "gx,gy" anyway. Instead of expanding the input "x,y" to matrices to
later reduce them back to vectors, I suggest changing the input validation so
that depending on whether the input is a vector or a matrix, the correct data
and format is copied to "gx,gy". If we do this, we also do not need to perform
any numerical operations on input data before it is checked by the input
validation. streamline.m also needs to be adjusted as it is not compatible
with vectors.


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