[Octave-bug-tracker] [bug #64555] corr produces input validation error with two inputs having different number of columns

[Nicholas Jankowski]

Follow-up Comment #3, bug #64555 (project octave):

ok, the input check in corr is wrong.  a size check was put in mainly to catch
mixed row/column vector inputs which should error in corr but won't in cov. 
it should be a row count comparison (which will also catch the mixed vector
orientation)

however, just changing the input check to:


if (rows (x) != rows (y))
  error ("corr: X and Y must have the same number of rows");
endif


the same inputs now produce a cov error:


>> cov(rand(13,4),rand(13,1))
error: cov: X and Y must have the same number of observations
error: called from
    cov at line 191 column 9


that cov behavior _is_ matlab compatible.  so will need to figure out how to
modify corr to pass something with unequal column count to cov and extract the
right results. 


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