bugGNU Octave - Bugs: bug #56974, Display size/type of non-double...


bug #56974: Display size/type of non-double non-char arrays

Submitted by:  Colin Macdonald <cbm>
Submitted on:  Mon 30 Sep 2019 07:07:11 PM UTC  
Category:  Interpreter Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Matlab Compatibility
Status:  None Assigned to:  None
Originator Name:  Open/Closed:  Open
Release:  dev Operating System:  Any

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Thu 24 Oct 2019 03:08:39 AM UTC, comment #4: 

OK.  The change in scalar display would be pretty significant for Octave, but it could also simplify the implementation by not trying to special case scalar values so they are printed on one line.

John W. Eaton <jwe>
Project Administrator
Wed 23 Oct 2019 10:17:22 PM UTC, comment #3: 

Yes, for scalars too:

>> A = int64(42)

A =



>> B = rand(1,1,'single')

B =



Colin Macdonald <cbm>
Wed 23 Oct 2019 08:41:14 PM UTC, comment #2: 

This bug has some overlap with bug #51410.  Maybe both should be fixed at the same time.

John W. Eaton <jwe>
Project Administrator
Wed 23 Oct 2019 07:49:47 PM UTC, comment #1: 

I agree that the type info is useful.

Other than providing a custom display method for the built-in types, does Matlab offer a way to disable this feature?

Should we also display the type and size info for double values?

What about scalars?  Should type information also be displayed for those?  How should it be formatted?

John W. Eaton <jwe>
Project Administrator
Mon 30 Sep 2019 07:07:11 PM UTC, original submission:  

In Matlab 2016b, they started displaying some metainfo along with non-double and non-char arrays:

>> A = int64(round(10*rand(3,4)))

A =

  3x4 int64 matrix

    7    7    1    3
    8    7    5    6
    3    2   10    2

>> A = rand(2,3, 'single')

A =

  2x3 single matrix

    0.7513    0.5060    0.8909
    0.2551    0.6991    0.9593

That looks nice to me: generally its important to me whenever something isn't a double.  Should we do this too?

Colin Macdonald <cbm>


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