Standard Matlab jet color palette does not contain black/white colors while it is natural to present by these colors minimal/maximal values. This is done in presented extended jet palette. Limitation of jet palette by 256 colors is also presented in this extended palette.
Valeriy (2020). Extended standard Matlab jet color palette (https://www.mathworks.com/matlabcentral/fileexchange/39688-extended-standard-matlab-jet-color-palette), MATLAB Central File Exchange. Retrieved .