Hi Lyu,
The support for controlling text interpreter (including LaTeX) for displayed text using the “Interpreter” property is added from R2023b. You can upgrade to R2023b or a later version to use this feature. I have attached the link of release notes of R2023b for further context:
You can set the “TickLabelInterpreter” property of heatmap to “latex” for the tick labels to show the LaTeX-formatted elements. Here’s a sample implementation for the same:
% Sample data
xvalues = {'\alpha', '\beta', '\gamma', '\delta', '\epsilon'};
yvalues = {'\theta', '\lambda', '\mu', '\nu', '\omega'};
cdata = rand(5);
% Create heatmap
h = heatmap(xvalues, yvalues, cdata);
% Set the tick label interpreter to LaTeX
h.NodeChildren(3).TickLabelInterpreter = 'latex';
This method will ensure that the labels in both the x-axis and y-axis display correctly formatted LaTeX symbols.
To know more about heatmaps, refer to the following MathWorks Documentation link:
