How to select the range of data based on threshold range of our own choice?
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Dear MATLAB experts,
I want to use only the points corresponding to relatively high amplitudes? (e.g., try -10 to 0 dB or -20 to -10 dB or -30 to -20 on the normalized plots).
In attached imaging data output which veries from -45 to 0 dB.
I want to make 3 classes and plot data in with 3 classes and 3 colors.
I lookforward to receive your suggestions. I tried an approach but it gives logical output which is not suitable for my case.
Image Analyst on 20 Sep 2022
load('output_classes.mat'); % data
intensity = 20*log10(abs(S_VH)/max(max(abs(S_VH))));
imagesc(x_vect, y_vect, intensity,[-45 0]);
cmap = [0,0,0;