text in plot with latex interpreter

Dear

I would like to write come text in a simple plot using latex codification

The plot is here

The text in plot is code as follows:

text(x0   ,y0-(i-1)*dy,sprintf('$$c_{[\rho_{e}]_w^m}$$= %.3f',b(i)), ...
                           'Interpreter', 'latex', ...
                           'fontsize', 10);

Why dose the subscript of c is not the greek letter rho?

thanks in advance

[Luis Isaac]

many thanks!!

Answer 1

[Cris LaPierre]

Because sprintf interprets '\r' as a carriage return. Use '\\r' instead.

text(.1,.5,sprintf('$$c_{[\\rho_{e}]_w^m}$$= %.3f',18.556), ...
    'Interpreter', 'latex', 'fontsize', 10);