[Octave-bug-tracker] [bug #65146] griddata - linear interpolation incorrect output when number of query points = 3

[Nicholas Jankowski]

Update of bug#65146 (group octave):

                  Status:                    None => Ready For Test         
         Planned Release:                    None => 9.1.0 (current stable) 
                 Summary: griddata - linear interpolation output errors when
number of query points = 3 => griddata - linear interpolation incorrect output
when number of query points = 3

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Follow-up Comment #1:

verified it was simply cross guessing wrong at what dimension to operate over
when ni = 3.  

since the query points are forced into columns already, changing 

N = cross ([x2-x1, y2-y1, z2-z1], [x3-x1, y3-y1, z3-z1]);

to 

N = cross ([x2-x1, y2-y1, z2-z1], [x3-x1, y3-y1, z3-z1], 2);

was sufficient.  

Added a BIST with some checks, it passes the test suite so doesn't seem to
break any other functions.  Pushed to stable as:

https://hg.savannah.gnu.org/hgweb/octave/rev/dfd8fcca6652

marking ready for test.


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