bugGNU Octave - Bugs: bug #53999, polar plot does not plot axis when...


bug #53999: polar plot does not plot axis when plotting some functions

Submitter:  None
Submitted:  Mon 28 May 2018 03:23:51 PM UTC
Category:  Plotting with OpenGL Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Inaccurate Result
Status:  Fixed Assigned to:  None
Originator Name:  Saleh Originator Email:  -email is unavailable-
Open/Closed:  * Closed Release:  * 4.4.0
Operating System:  * GNU/Linux Fixed Release:  None
Planned Release:  None
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Tue 12 Jun 2018 06:28:53 PM UTC, comment #2: 

I fixed the issue with negative rho values on the stable branch in this cset (http://hg.savannah.gnu.org/hgweb/octave/rev/265d3a59da27).  It will be a part of the 4.4.1 bug fix release.  Alternatively, since this is just an m-file, you can fetch it from the Mercurial repository for Octave and substitute the m-file in your installation in order to see the change.

Rik <rik5>
Group administrator
Tue 29 May 2018 02:56:47 PM UTC, comment #1: 

I am also having this problem. Seems to be related to plotting negative values.

Same error.

Mon 28 May 2018 03:23:51 PM UTC, original submission:  

The following code does not plot the axis, it only plot the curve.
In matlab it works just fine.

polar (x,atan(-x.^2))

It produce the following error

error: set: "dataaspectratio" must be greater than 0

When changing the function slightly, it works without any issue.

polar (x,atan(+x.^2))



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  • -email is unavailable- added by rik5 (Posted a comment)
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    Follow 6 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2018-06-12 rik5 Item GroupUnexpected Error or Warning Inaccurate Result
        StatusConfirmed Fixed
        Open/ClosedOpen Closed
    2018-06-04 mtmiller Carbon-CopyRemoved 80942 -
    2018-06-04 mtmiller Item GroupNone Unexpected Error or Warning
        StatusNone Confirmed

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