[Octave-bug-tracker] [bug #52724] text() expects different signs for semilogy() and plot() for negative data;

[Stefan Großhauser]

URL:
  <http://savannah.gnu.org/bugs/?52724>

                 Summary: text() expects different signs for semilogy() and
plot() for negative data; 
                 Project: GNU Octave
            Submitted by: stegrobt
            Submitted on: Fri 22 Dec 2017 11:33:31 AM UTC
                Category: Plotting
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: Stefan Großhauser
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: GNU/Linux

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Details:



# does not matter
graphics_toolkit("fltk");
graphics_toolkit("gnuplot");

# shows the text:
x = 0:0.1:10;plot (x, -(abs(10*sin (x))+eps));text (pi, -0.7, "arbitrary
text");

# does NOT show the text:
x = 0:0.1:10;plot (x, -(abs(10*sin (x))+eps));text (pi, +0.7, "arbitrary
text");

##### now the unexpected part:
# does NOT show the text and no box drawn:
# (expected: shows the text and draws the box)
x = 0:0.1:10;semilogy (x, -(abs(10*sin (x))+eps));text (pi, -0.7, "arbitrary
text");

# shows the text (but should not):
x = 0:0.1:10;semilogy (x, -(abs(10*sin (x))+eps));text (pi, +0.7, "arbitrary
text");
-verbatim




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