How to manually output publishing content from a variable

Question

When using the Publish feature of MATLAB, it typically publishes only what comes after the % signs or the function output. However, is there any command to take a variable and splice its value into text, possibly even creating LaTeX formulae from a MATLAB variable that holds a character string?

Answer 1

Here is an example of rendering LaTeX formulae (one hard-coded in comments, other stored as a string in a variable).

%% LaTeX Examples
% Below are some equations rendered in LaTeX.
% (try to publish this file).
%

%% The definition of e
% Here we use equation embedded in the file.
%
% $$ e = \sum_{k=0}^\infty {1 \over {k!} } $$
%

%% The Laplace transform
% Here we render an equation stored in a variable.
%

% offscreen figure
fig = figure('Menubar','none', 'Color','white', ...
    'Units','inches', 'Position',[100 100 6 1.5]);
axis off

str = 'L\{f(t)\} \equiv  F(s) = \int_0^\infty\!\!{e^{-st}f(t)dt}';
text(0.5, 0.5, ['$$' str '$$'], 'Interpreter','latex', 'FontSize',28, ...
    'HorizontalAlignment','center', 'VerticalAlignment','middle')
snapnow
close(fig);

Here is how it looks like when the file is published as HTML:

You could wrap that last code in a helper function render_latex_string(str) and call it from different places.