[Octave-bug-tracker] [bug #59636] iqr function does not produce Matlab compatible output

[Nicholas Jankowski]

Follow-up Comment #7, bug #59636 (project octave):

attached is a patch to replace the current iqr with one that produces matlab
compatible output and is about 10x faster as well. it handles n-dimensional
vectors, vector dimensions, and "all", and compatibly handles NaNs and Infs. a
few BISTS added for verification. 

It doesn't handle probability distribution class inputs, as Octave has no such
class implemented yet. left as a TODO.

Most of the code is checks on the type of DIM specified, and permutations to
handle when its a vec. that said the slowest part is the handoff to quantile
which makes heavy use of repmat. 

patch and function attached. patch also adds note to NEWS.

**note - i did not yet grep octave or the statistics toolbox to see if
anything using the old iqr has BISTS that break from changing to matlab
compatible quantile.

(file #50442, file #50443)
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Additional Item Attachment:

File name: replace_iqr.diff               Size:14 KB
    <https://file.savannah.gnu.org/file/replace_iqr.diff?file_id=50442>

File name: iqr.m                          Size:9 KB
    <https://file.savannah.gnu.org/file/iqr.m?file_id=50443>



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