bugGNU Octave - Bugs: bug #42394, hist fails when data has two...


bug #42394: hist fails when data has two columns and normalization is requested

Submitted by:  Juan Pablo Carbajal <juanpi>
Submitted on:  Tue 20 May 2014 05:52:04 PM UTC  
Category:  Octave Function Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Regression
Status:  Fixed Assigned to:  None
Originator Name:  juanpi Open/Closed:  Closed
Release:  dev Operating System:  Any

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Fri 23 May 2014 08:26:05 PM UTC, comment #3: 

I fixed this on the stable branch (http://hg.savannah.gnu.org/hgweb/octave/rev/9040ad7feb35).  It will be a part of the 3.8.2 bug fix release due very soon.

Rik <rik5>
Project Administrator
Fri 23 May 2014 03:34:34 PM UTC, comment #2: 

Confirmed.  This is a regression between 3.6.4 and 3.8.0.  It should be a simple m-file fix to use repmat to expand the normalization constant to match the input number of columns.  I added it to the list of Short Projects on the wiki (http://wiki.octave.org/Short_projects#Bugs).

Rik <rik5>
Project Administrator
Tue 20 May 2014 05:55:31 PM UTC, comment #1: 

To make clear that the problem is simple the code works if
a normalization is given for each column.

hist(rand(10,2),0:5, [1 1])

Juan Pablo Carbajal <juanpi>
Project Member
Tue 20 May 2014 05:52:04 PM UTC, original submission:  

The following code fails in Octave rev 79f69742971a

> hist(rand(10,2),0:5, 1)
error: hist: operator /: nonconformant arguments (op1 is 1x1, op2 is 1x2)
error: called from:
error:   /usr/local/share/octave/3.8.1/m/plot/draw/hist.m at line 160, column 10

It was verified (IRC) that the code runs ok in Matlab.

Juan Pablo Carbajal <juanpi>
Project Member


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    Follow 4 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2014-05-23 rik5 StatusConfirmed => Fixed
        Open/ClosedOpen => Closed
    2014-05-23 rik5 Item GroupIncorrect Result => Regression
        StatusNone => Confirmed

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