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[Octave-bug-tracker] [bug #61765] matlab compatibility - issorted with c
From: |
Nicholas Jankowski |
Subject: |
[Octave-bug-tracker] [bug #61765] matlab compatibility - issorted with char arrays |
Date: |
Wed, 5 Jan 2022 12:07:48 -0500 (EST) |
User-agent: |
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.110 Safari/537.36 |
URL:
<https://savannah.gnu.org/bugs/?61765>
Summary: matlab compatibility - issorted with char arrays
Project: GNU Octave
Submitted by: nrjank
Submitted on: Wed 05 Jan 2022 12:07:46 PM EST
Category: Octave Function
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Matlab Compatibility
Status: None
Assigned to: None
Originator Name: Nicohlas Jankowski
Originator Email:
Open/Closed: Open
Release: 7.0.90
Discussion Lock: Any
Operating System: Any
_______________________________________________________
Details:
This appears to be a compatibility concern, not sure if this is from a change
in matlab behavior:
Matlab 2021b:
abc = ['a1'; 'a2'; 'a3'];
issorted (abc)
ans =
logical
1
issorted({abc})
ans =
logical
1
abc = ['a1'; 'a3'; 'a2'];
issorted (abc)
ans =
logical
0
issorted({abc})
ans =
logical
1
abc = ['a1'; 'b2'; 'a3'];
issorted (abc)
ans =
logical
0
issorted({abc})
ans =
logical
1
I included cellstrings because it seemed to be the only way octave would try
to process it:
Octave 7.0.1 (hg id: d00ae0ad8f89)
abc = ['a1'; 'a2'; 'a3'];
issorted(abc)
error: issorted: needs a vector
issorted({abc})
warning: multi-row character matrix converted to a string, only
the first row is used
ans = 1
abc = ['a1'; 'a3'; 'a2'];
issorted(abc)
error: issorted: needs a vector
issorted({abc})
warning: multi-row character matrix converted to a string, only
the first row is used
ans = 1
abc = ['a1'; 'b2'; 'a3'];
issorted(abc)
error: issorted: needs a vector
issorted({abc})
warning: multi-row character matrix converted to a string, only
the first row is used
ans = 1
So matlab appears to have no issues checking sorting on a char array, while
octave does. Matlab also appears to look at a char array in a cell as a
single unit for sorting, whereas octave sees it as a string array, but then
aborts checking for sorting anyway.
_______________________________________________________
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<https://savannah.gnu.org/bugs/?61765>
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- [Octave-bug-tracker] [bug #61765] matlab compatibility - issorted with char arrays,
Nicholas Jankowski <=
- [Octave-bug-tracker] [bug #61765] matlab compatibility - issorted with char arrays, Nicholas Jankowski, 2022/01/05
- [Octave-bug-tracker] [bug #61765] matlab compatibility - issorted array handling, Nicholas Jankowski, 2022/01/05
- [Octave-bug-tracker] [bug #61765] matlab compatibility - issorted array handling, Nicholas Jankowski, 2022/01/05
- [Octave-bug-tracker] [bug #61765] matlab compatibility - issorted array handling, Markus Mützel, 2022/01/05
- [Octave-bug-tracker] [bug #61765] matlab compatibility - issorted array handling, Markus Mützel, 2022/01/05
- [Octave-bug-tracker] [bug #61765] matlab compatibility - issorted array handling, Nicholas Jankowski, 2022/01/05
- [Octave-bug-tracker] [bug #61765] matlab compatibility - issorted can't handle arrays, Nicholas Jankowski, 2022/01/10