[Octave-bug-tracker] Octave - plotting bug when plotting broken rational functions

[Ingmar K]

Dear Sir / Madam,

when using Octave to plot broken-rational functions like 
f(x)=(3x+3)/(-4x+2) Octave gives out a false plot. I put the octave-plot 
into the attachment and into a second attachment I put the plot how it 
should look (plotted with Maxima). Thing is, Octave plots 
broken-rational functions with a vertical line from infinity to 
-infinity. But that line mustn't be there. This is quite interessting, 
because I think Maxima and Octave are both using GnuPlot to plot 
graphes. There might be a handler problem, when giving the function to 
be plotted from Octave to GnuPlot.

Additional for your information: I use the following system: Windows 7 
Home Preimum in 64bit. Windows 7 is a host-system for Linux Ubuntu 
12.04LTS. For hosting I use Oracle VM VirtualBox 4.1.10. For typing in 
Octave I use QtOctave version 0.10.1 (which has quite a good 
MatLab-feeling, good work, indeed). Tests with typing in Gedit and then 
compiling show the same result.

Regards,
Ingmar Klugert

Graph_Maxima.png
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Graph_Octave.png
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