MATLAB red and blue gradient

Quick answer：

MATLAB allows users to create red and blue gradients using various functions and techniques. For instance, the 'gradient' function can be used to create a gradient from red to blue. Additionally, the 'colormap' function can be utilized to specify a colormap that includes a red-blue gradient. In image processing and data visualization, such gradients are often used to represent a range of values or to enhance the visual appeal of plots.