The legend option called interpreter latex does not display the latex symbols correctly

If I use Interpreter latex in the legend, the latex text is not correctly displayed

plot(1:10,1:10,'DisplayName','\eta_i')
line(1:10,5./((1:10).^2),'color','red','DisplayName','A_{[1,2)}');
legend('Interpreter','latex')

Warning: Error updating Legend.

String scalar or character vector must have valid interpreter syntax:
A_{[1,2)}

Instead, if I do not call Interpreter latex in the legend, the latex symbols are correctly interpreted. Why? I would expect the opposite...

plot(1:10,1:10,'DisplayName','\eta_i')
line(1:10,5./((1:10).^2),'color','red','DisplayName','A_{[1,2)}');
legend

Answer 1

[Star Strider]

You need to put dollar signs ($) around the string you send to the LaTeX interpreter —

plot(1:10,1:10,'DisplayName','$\eta_i$')
line(1:10,5./((1:10).^2),'color','red','DisplayName','$A_{[1,2)}$');
legend('Interpreter','latex')

That also explains the error that was thrown.

.

[Sim]

thanks a lot! :-)

[Star Strider]

As always, my pleasure!