Display White Color at Zero Position in Heatmaps

The article mentions that we can use the multimap function to display white color at the zero position in heatmaps. To achieve this, it's crucial to set a symmetric color range around zero. This implementation requires configuring the color axis limits symmetrically (e.g., [-max_value, max_value]) so that zero becomes the central point of the colormap. When using MATLAB's multimap function or similar visualization tools, developers should specify symmetric boundaries through parameters like 'CLim' or range settings. This approach assigns white to zero values while using contrasting colors (like blue for negative and red for positive values) for other data points, creating an intuitive divergence colormap. The method is straightforward to implement even for programmers with minimal experience, as it typically involves just one additional parameter setting. We recommend incorporating this technique when using multimap functions in your code to enhance heatmap visualization clarity, particularly for datasets containing both positive and negative values where zero represents a meaningful baseline or neutral point.