bugGNU Octave - Bugs: bug #55045, clabel in extreme positions


bug #55045: clabel in extreme positions

Submitted by:  Giovanni Ciriani <gciriani>
Submitted on:  Sat 17 Nov 2018 07:41:37 PM UTC  
Category:  Plotting Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Missed Error or Warning
Status:  Confirmed Assigned to:  None
Originator Name:  Open/Closed:  Open
Release:  4.4.1 Operating System:  Microsoft Windows

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Wed 21 Nov 2018 10:43:30 AM UTC, comment #3:

Yes, sorry, I even tested the example but did not go further into analysis. I also see the warnings. We now need to find a simpler example so that it is easier to find what is happening.

Pantxo Diribarne <pantxo>
Project Member
Tue 20 Nov 2018 10:12:54 PM UTC, comment #2:

Did you see the example files I had attached?

Giovanni Ciriani <gciriani>
Sat 17 Nov 2018 08:24:46 PM UTC, comment #1:

Thanks for your bug report.
Can you provide a minimal example with X, Y, and Z included so that we can try to reproduce?

Pantxo Diribarne <pantxo>
Project Member
Sat 17 Nov 2018 07:41:37 PM UTC, original submission:

contour(X, Y, Z, [.5 .6 .7 .8 .9])
works correctly, but a expanding it with ShowText doesn't:
contour(X,Y,Z,'ShowText', 'on',[.5 .6 .7 .8 .9])
warning: division by zero
warning: called from
_clabel_ at line 82 column 15
_contour_>update_text at line 564 column 11
_contour_ at line 226 column 5
contour at line 74 column 16

I know that the value 0.9 for the contour line is an extreme position, because
contour(X,Y,Z,'ShowText', 'on',[.5 .6 .7 .8])
doesn't trigger any warning

Giovanni Ciriani <gciriani>


(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attach Files:

Attached Files
file #45475:  LawnBowlingFunctG.m added by gciriani (3KiB - text/plain)
file #45476:  LBpContour.m added by gciriani (744B - text/plain)


Depends on the following items: None found

Items that depend on this one: None found


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  • -email is unavailable- added by gciriani (Submitted the item)
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    Follow 5 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2018-11-21 pantxo StatusNeed Info => Confirmed
    2018-11-17 gciriani Attached File- => Added LawnBowlingFunctG.m, #45475
        Attached File- => Added LBpContour.m, #45476
    2018-11-17 pantxo StatusNone => Need Info
    2018-11-17 gciriani Carbon-Copy- => Added -email is unavailable-

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