Why I have a bad quality in simple plot (none smoothing) ?

I have a problem with bad quality in simple plot. For instance I attached 5 plots - which I created in Matlab 2016 academic version and which I created on the other PC but with the same software version.

Example 1:

Example 2:

Example 3:

[Adam]

What does

opengl info

show? If you are using the software option rather than the hardware option you get worse looking plots.

[lwitanowski]

I had:

HardwareSupportLevel: ' none (known graphics driver issues)'

so I used function opengl hardware and now everything is ok!

Thanks a lot!

[Adam]

I'll add it as an answer then, just in case anyone else visits this question with the same problem.

Answer 1

[Adam]

opengl info

will tell you whether you are using hardware or software opengl rendering. If you are using software rendering (sometimes this is necessary) then you will tend to get plots that look noticeably worse.

opengl hardware
opengl( 'save', 'hardware' )

will, respectively, set your session to use the hardware opengl rendering and save this in your preferences for future sessions.

Sometimes if your graphics driver crashes Matlab will open your next session in software mode, but does not change your saved preferences so if you then close and reopen it will be back in hardware mode.

[Jin Haeng Choi]

Thanks alot