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[Octave-bug-tracker] [bug #55931] Plot diisappers after zooming out once
[Octave-bug-tracker] [bug #55931] Plot diisappers after zooming out once and then clicking "Autoscale"
Fri, 15 Mar 2019 17:33:14 -0400 (EDT)
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Summary: Plot diisappers after zooming out once and then
Project: GNU Octave
Submitted by: philipnienhuis
Submitted on: Fri 15 Mar 2019 10:33:13 PM CET
Category: Plotting with OpenGL
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Unexpected Error
Assigned to: None
Originator Name: Philip Nienhuis
Discussion Lock: Any
Operating System: Microsoft Windows
(Release is actually 5.1.1 but that is not in the bug tracker's drop-down
Steps to reproduce:
>> poly = [95000 482000; 98000 485000; NaN NaN; 95000 485000; 98000 482000];
>> plot (poly(:, 1), poly(:, 2))
>> box on; grid on; axis equal; axis tight
A cross ('X') is shown.
Then, select the "Zoom out" button, and click in middle of plot
==> plot is zoomed out, fine.
Next, click "Autoscale" button
==> cross disappears completely and cannot be redrawn. Nothing seems to help.
This is the bug.
Just a hunch: is this another manifestation of single precision in OpenGL?
Because if after zooming out, again zooming in a little by selecting a zoom
area, Autoscale seems to work in Qt and the plot is again filled with the
Using fltk it is a bit easier to recover the plot, just "axis tight" does the
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- [Octave-bug-tracker] [bug #55931] Plot diisappers after zooming out once and then clicking "Autoscale",
Philip Nienhuis <=