[bug #68154] Viewing the value of time (x axe) of each point of a 2-D plot

Pantxo Diribarne <[email protected]>
Newsgroups gmane.comp.gnu.octave.bugs
Message-ID <[email protected]>
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Update of bug #68154 (group octave):

                Category:                Plotting => Plotting with OpenGL
              Item Group:         Feature Request => Inaccurate Result
                  Status:                    None => Duplicate
        Operating System:       Microsoft Windows => Any

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Follow-up Comment #2:

This is yet another symptom of bug #32980. Until this bug is fixed, you need
to re-scale your data before plotting so that the graphics system is fed with
numbers compatible with single precision floating point representation (`eps
('single')`). E.g:


npoints = 100;
fps = 2.5e9;
t = (0:(npoints-1))/fps;
f0 = 1e8;
voltage = sin (2*pi*f0*t);
plot (t*1e9, voltage)
xlabel ('t [ns]')
ylabel ('Voltage [V]')


There is already examples of such workarounds in the manual:

https://docs.octave.org/v11.1.0/Precision-issues.html

If it's OK, I'll close this report as a duplicate of bug #32980.


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