bugGNU Octave - Bugs: bug #41068, voronoi produces too many vertices...

 
 

bug #41068: voronoi produces too many vertices for some inputs (regression)

Submitted by:  Rik <rik5>
Submitted on:  Thu 02 Jan 2014 07:09:42 PM UTC  
 
Category: Octave FunctionSeverity: 3 - Normal
Priority: 5 - NormalItem Group: Regression
Status: Wont FixAssigned to: None
Originator Name: Open/Closed: Closed
Release: 3.6.4Operating System: Any

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Thu 02 Jan 2014 10:51:50 PM UTC, comment #3:

see bisector fix for #40996 comment #5

hekawi <hekawi>
Thu 02 Jan 2014 08:43:39 PM UTC, comment #2:

I remember trying pretty hard to make the Qhull-based functions produced results that are compatible with Matlab. So if anyone makes further changes, please ensure that we don't break compatibility.

John W. Eaton <jwe>
Project Administrator
Thu 02 Jan 2014 08:39:35 PM UTC, comment #1:

Looking at voronoi.m from 3.4.3, the calculation of ybox is completely incorrect. I think earlier versions of Octave just got lucky when presented with only 2 data points which is under the 3 required for a 2-D plot (see bug #40996). Closing report.

Rik <rik5>
Project Administrator
Thu 02 Jan 2014 07:09:42 PM UTC, original submission:

In octave 3.2.4 and 3.4.3 the following voronoi input correctly produces 3 output line segments.

In octave 3.6.4 and later (including 3.8.0) this produces 5 line segments.

Rik <rik5>
Project Administrator

 

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    Follow 2 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Thu 02 Jan 2014 08:39:47 PM UTCrik5Open/ClosedOpen=>Closed
    Thu 02 Jan 2014 08:39:35 PM UTCrik5StatusNone=>Wont Fix

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