[Octave-bug-tracker] [bug #45271] Incorect lineplot when x axis values become large

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?45271>

                 Summary: Incorect lineplot when x axis values become large
                 Project: GNU Octave
            Submitted by: None
            Submitted on: So 07 Jun 2015 08:36:32 UTC
                Category: Plotting
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: Lars
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.8.2
        Operating System: GNU/Linux

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Details:

%Bug in plot() with lines in Octave 3.8.2
%not tested in Octave 4 yet

x = 0 : 1/1440 : 1;
y = rand(size(x));

figure(1);plot(x    ,y,'.-') %all is fine
figure(2);plot(x+now,y,'.-') %yuck....

% dots / markers are always located fine
% but lines are drawn incorrectly when x-values get too big
% probably some rounding or casting problem in plot...
% this happens always when x-axis is a time axis 
% as the current time as deliverd by now() triggers the problem   




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