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Fix empty array edge cases in mvregress #486

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Merged
pr0m1th3as merged 4 commits into from
Sep 16, 2026
Merged

Fix empty array edge cases in mvregress #486

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9c6849a
Fix empty array edge cases in mvregress
Sonu0305 Sep 14, 2026
0704dca
Refactor tests to use %!error instead of %!fail
Sonu0305 Sep 14, 2026
521ba2c
Update empty array error message for mvregress
Sonu0305 Sep 15, 2026
4b1adbb
Fix case in mvregress error and restore test formatting
Sonu0305 Sep 16, 2026
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7 changes: 7 additions & 0 deletions inst/Regression/mvregress.m
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Original file line number Diff line number Diff line change
Expand Up @@ -75,6 +75,9 @@
error ("mvregress: Y must be a real numeric matrix.");
endif
[n, d] = size (Y);
if (isempty (Y))
error ("mvregress: Y cannot be an empty array.");
endif

## --- normalise the design to per-observation d-by-K matrices ---
is_numeric = ! iscell (X);
Expand Down Expand Up @@ -431,5 +434,9 @@
%!error <Invalid call> mvregress (1)
%!error <Y must be a real numeric matrix> mvregress (ones (3), {1})
%!error <X must have as many rows as Y> mvregress (ones (2, 2), ones (3, 2))
%!error <mvregress: Y cannot be an empty array.> ...
%! mvregress ([], [])
%!error <mvregress: Y cannot be an empty array.> ...
%! mvregress (zeros (0, 3), zeros (0, 1))
%!error <algorithm must be> mvregress (ones (3, 2), ones (3, 2), "algorithm", "xxx")
%!error <unknown option 'bogus'> mvregress (ones (3, 2), ones (3, 2), "bogus", 1)