bugGNU Octave - Bugs: bug #38553, axis() command and badly re-drawn...


bug #38553: axis() command and badly re-drawn plots

Submitted by:  Rik <rik5>
Submitted on:  Tue 19 Mar 2013 09:57:04 PM UTC  
Category:  Plotting with OpenGL Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Incorrect Result
Status:  Fixed Assigned to:  None
Originator Name:  Open/Closed:  Closed
Release:  dev Operating System:  GNU/Linux

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Mon 13 Nov 2017 04:26:12 PM UTC, comment #3: 

I can't reproduce this anymore either.  I'm not sure whether the deep issue was actually fixed, or it is just less deterministic.  For the time being, however, I'll close the bug.

Rik <rik5>
Project Administrator
Mon 13 Nov 2017 03:39:45 PM UTC, comment #2: 

@Rik: Are you still able to trigger this bug? I am not, neither with fltk nor with Qt.

Pantxo Diribarne <pantxo>
Project Member
Mon 17 Oct 2016 09:37:49 PM UTC, comment #1: 

I added an example which I think may be a clue, inspired from this thread on the help list:

x = 0:.2:10*pi;
subplot (2,1,1)
plot (x, sin(x))
xlim ([15 17])
subplot (2,1,2)
plot (x, sin(x))
for ii = 1:2:15
xlim ([ii 32-ii])

It shows that the length of the ticks is not deterministic, it somehow depends on how much times xlim has been called.

Pantxo Diribarne <pantxo>
Project Member
Tue 19 Mar 2013 09:57:04 PM UTC, original submission:  

There seems to be a problem when using the axis() command to manually set the axis size.  The problem is manifested as odd spacing of labels or odd calculated lengths for axis tick marks.  This may have something to do with turning off update routines while another update routine is executing.

Sample code exhibiting long x-tick lengths:

plot (1:100)
axis ([0 100 -50 250])
axis ([0 100 -50 50])

This produces the attached plot.  The commands need to be typed in individually.  If I put them in a file and source the file then everything works.

The following sample code causes the xlabel to be squished up against the x-axis labeling which is incorrect.

plot (1:100)
xlabel ('x-axis')
ylabel ('y-axis')
axis ([0 80 1 100])
axis ([0 80 -50 250])

See the second attached file for the produced plot.

Rik <rik5>
Project Administrator


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Attach Files:

Attached Files
file #27635:  ytick_size.jpg added by rik5 (17KiB - image/jpeg)
file #27636:  xlabel_squish.jpg added by rik5 (17KiB - image/jpeg)


Depends on the following items: None found

Items that depend on this one: None found


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    Follow 5 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2017-11-13 rik5 StatusConfirmed => Fixed
        Open/ClosedOpen => Closed
    2013-08-01 bpabbott StatusNone => Confirmed
    2013-03-19 rik5 Attached File- => Added ytick_size.jpg, #27635
        Attached File- => Added xlabel_squish.jpg, #27636

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