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Re: Problems in octave 5.1.0 in the function plot

From: arkkimede
Subject: Re: Problems in octave 5.1.0 in the function plot
Date: Thu, 30 May 2019 23:24:00 +0200

Thanks Dmitri you catch the problem.
Putting in the .bashrc the line
the plot now is regular an correct.
Thanks again.

Il giorno gio 30 mag 2019 alle ore 19:39 Dmitri A. Sergatskov <address@hidden> ha scritto:
On Thu, May 30, 2019 at 11:03 AM arkkimede <address@hidden> wrote:
> Hi!
> Few days ago I found the instruction for the installation of Octave 5.1.0 on ubuntu 18.04.
> This link report the instructions that I'v used:
> Now I'm octave running on my linux box Ubuntu 18.04.
> But I have a problem.
> Considering this minimal code:
> %--------start
> #!/usr/bin/octave -qf
> D2R = pi/180.;
> ang_d=0:1:360;
> ang_r=ang_d*D2R;
> h=figure;
> plot(ang_d, sin(ang_r));
> refresh;
> waitfor(h)
> %--------stop
> If I plot the sine function the line is interrupted.
> The same if I use the octave GUI how reported in this screenshot:
> Please could you help me?
> PS: I used octave 5.1.0 in Windows and this issu does not present
> PS2 I tried also changing graphics_toolkit without results

I am pretty sure this is the problem with your graphics card opengl driver.
If you are using mesa (i.e. no the proprietary nvidia driver) try to set
LIBGL_ALWAYS_SOFTWARE =1 before starting octave.


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