Issue with latex interpreter plot/chart title

Hi, I would like to assign plot title as follows Y_10mm_X = num2str(b2(i)). where i = 0.78

For this, I tried as follows

title(['Y= 5mm_x ='  num2str(b2(i)) ' mm'],'FontSize',20,'Color','black','Interpreter','latex')

However, I got teh below error..Please help me with this..

String scalar or character vector must have valid interpreter syntax:

Answer 1

[Walter Roberson]

Are you certain that you want the x to be a subscript of the second m ??

i = 1;
b2(i) = 0.78

b2 = 0.7800

title(['$Y= 5mm_x ='  num2str(b2(i)) ' mm$'], 'FontSize', 20, 'Color', 'black', 'Interpreter', 'latex')

[Turbulence Analysis]

Hi,

Thanks .. Yes x to be subscripted with mm..

[Turbulence Analysis]

Sorry, not a subscript, But underscore like this Y = 5mm_x = 0.78 mm

[Turbulence Analysis]

I figured out,, Now its Ok..

title(['$Y= 5mm\_{x} ='  num2str(b2(i)) ' mm$'], 'FontSize', 20, 'Color', 'black', 'Interpreter', 'latex')