The legend box in plot has no colors

The legend box in matlab has no colours.

This is the code:

x = linspace(0,pi);

y1 = cos(x);

plot(x,y1,'DisplayName','cos(x)')

hold on

y2 = cos(2*x);

plot(x,y2,'DisplayName','cos(2x)')

hold off

legend

Answer 1

[Star Strider]

This is a known problem with recent AMD graphics drivers.

See for example: Lines in legend are missing

Updated drivers that solve this problem may by now be available.

.

Answer 2

[Luca Schibik]

Hi, I have the same issue. I resolved it by imposing LineWidth. Once you have set it, you will have full legend! Try this little code in order to check

x=0:0.1:10;

y=sin(x);

z=sin(2*x);

figure(1)

plot(x,y,'LineWidth',2)

ylim([-2 2])

hold on

plot(x,z,'LineWidth',2)

grid on

legend ('sin(x)','sin(2x)')

Hope this help!

Answer 3

[Vinai Datta Thatiparthi]

Hey Arihant,

Although I'm unable to reproduce the error that you mention at my end, I have noticed a few instances where other users have reported the same issue. Here are the links to those discussion on the MATLAB Answers forum:

Link1

Link2

As a workaround, please perform a clean reinstall of MATLAB and update your graphics drivers to get your code to work as expected.

Hope this helps!