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[Octave-bug-tracker] [bug #32980] for backend FLTK, real is used for axe


From: Michael Godfrey
Subject: [Octave-bug-tracker] [bug #32980] for backend FLTK, real is used for axes. double should be used
Date: Sat, 18 Feb 2012 05:35:11 +0000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.1) Gecko/20100101 Firefox/10.0.1

Follow-up Comment #15, bug #32980 (project octave):

I suspect that Michael Goffioul knows how to do this.
It would be a good idea to test all data being processed
for plotting to ensure that the plot comes out right.
For OpenGL this means doing a transform that maps all the
data to within reals. gl-render.cc is a candidate place
to do this.   But it would also be useful to
check for very small data value differences so that the
plot scales and tic values can be made meaningful.
Now, an attempt to plot: plot(1:0.000001:0.000009)
does not work well, due to axis values being truncated.
Note that Matlab does not do this right either.



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