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spectrogram of matrix in MATLAB

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parham kianian
parham kianian 2020-3-3
I hvae a matrix F whose arrays are positive numbers with the size of 8000 * 1000.
I want to plot a spectrogram for F such that x axis shows row, y axis shows column and lowest value of F be plotted in blue and highest value in red. Other arrays should be assigned a color between blue and red according to their value.

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