How to modify the colorbar font and size when drawing with the heatmap function？

Hi @Wei,

To address and interpret your comments correctly, “When using the heatmap function to draw, the font and size of colorbar cannot be modified.” & going through documentation provided below,

https://www.mathworks.com/help/bioinfo/ref/heatmap.html

I implemented code which demonstrates how to set the font size for the heatmap itself and the axes, but the colorbar remains unaffected by these settings.

   % Define the matrix for the heatmap
   M = [0.9284, 0.4765, 0.2391, 0.2548, 0.2648;
     0.2575, 0.8214, 0.8071, 0.2356, 0.2339;
     0.2331, 0.2307, 0.9944, 0.5106, 0.2217;
     0.2449, 0.2102, 0.2005, 0.6086, 0.2167;
     0.2738, 0.2263, 0.2052, 0.2279, 0.5993]; 

   % Define the labels for the axes
   xLabels = {'20', '50', '100', '150', '200'}; 
   yLabels = {'10', '20', '30', '40', '50'}; 

     % Create the heatmap
     h = heatmap(M, 'XDisplayLabels', xLabels, 'YDisplayLabels', yLabels); 
     title('RMSE Heatmap');
     xlabel('True');
     ylabel('Model');

   % Set font size for the heatmap
   fw = 12; 
   h.FontSize = fw;

   % Set the colormap
   colormap(h, 'parula');

   % Customize the axes font properties
   set(gca, 'FontName', 'Times New Roman', 'FontSize', fw);

Please see attached.

Hope this helps.