How do you use the LaTeX blackboard font in MATLAB?
latex, matlab, plot, text, user-interface
Solution
You might not have noticed it, but you get an warning message in the command prompt:
`Warning: Unable to interpret TeX string`
which tells you that MATLAB has trouble parsing your LaTeX expression. More specifically, the blackboard bold math font (indicated by the `'\mathbb'`) is not supported by MATLAB's built-in LaTeX interpreter (it requires the amsmath package).
One way to install this package is described here and here. I'll summarize it for you:
Download the AMS-LaTeX package from here.
Modify the m-file `tex.m`, which is located in the `MATLAB root\toolbox\matlab\graphics` folder (backup the file before modifying it):
2.1. In the `localDecorateInputString` function, modify `standardhead` to include the new packages (marked in bold):
`standardhead = [' \nofiles \documentclass{mwarticle} \usepackage{amsfonts, amsbsy, amssymb} \begin{document}']`
2.2. In the `localGetTeXPath` function, add the paths of where the AMS package files are located (marked in bold), for instance:
`texpath{1} = blah blah blah... texpath{end+1} = blah blah blah... texpath{end+1} = 'C:\amslatex';`
Copy all `.sty` files of the AMS package to the `MATLAB root\sys\tex` folder.
Restart MATLAB.
You should now have the necessary LaTeX font packages installed. I would've gladly checked it out myself if time allowed, it seems promising.
Problem
So, based on my question and solutions here, I would like to actually start using LaTeX, in figures as seen. However, one problem I am running into, is that I cannot seem to display the Expectation operator. From my research, I know that the expectation operator can be displayed as such normally as such: ``` /mathbb{E} ``` However, when I try to use it in MATLAB, nothing prints out. ``` clear all figure(1); clf(1); set(gcf, 'color', 'white'), axis off %# Remove axes and set white background my_text = '$$ \mathbb{E} $$'; text('units', 'inch', 'position', [-0.5 3.5], 'fontsize', 14, 'color', 'k', ... 'interpreter', 'latex', 'string', my_text); ``` Now, I know that the \mathbb is some sort of different 'library', but frankly it is quite useful for mathematical formulations. How do I 'include' it in MATLAB? I am lost on this.