Text cannot be a child of HeatmapChart, so as an alternative, could use imagesc.
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% Example data matrix and p-value matrix
dataMatrix = rand(10); % Replace with your data matrix
pValueMatrix = rand(10); % Replace with your p-value matrix
% Threshold for p-values
pValueThreshold = 0.1;
% Create a figure and axes
figure;
imagesc(dataMatrix); % Use imagesc to display the data matrix as a heatmap
colormap(sky);
colorbar;
% Get the size of the data matrix
[numRows, numCols] = size(dataMatrix);
% Loop through each element in the matrix
for row = 1:numRows
for col = 1:numCols
% Display the data value
dataValueStr = num2str(dataMatrix(row, col), '%.2f');
text(col, row, dataValueStr, 'HorizontalAlignment', 'center', ...
'VerticalAlignment', 'bottom', 'Color', 'black', 'FontSize', 10);
% Check if the p-value is below the threshold
if pValueMatrix(row, col) < pValueThreshold
% Overlay a symbol or p-value text on the heatmap
% Use '*' for symbol or num2str(pValueMatrix(row, col)) for text
pValueStr = '*'; % Change to num2str(pValueMatrix(row, col)) to show p-value
text(col, row, pValueStr, 'HorizontalAlignment', 'center', ...
'VerticalAlignment', 'top', 'Color', 'red', 'FontSize', 12);
end
end
end
% Set axis labels and title
xlabel('Columns');
ylabel('Rows');
title('Heatmap with Data Values and Significant P-values');
% Adjust the axis to display correctly
set(gca, 'XTick', 1:numCols, 'YTick', 1:numRows);
axis equal tight;
