normalize the frequency from o to 2pi in matlab

To normalize the frequency from 0 to 2π in Matlab, you can use the 2*pi() function to scale the frequency vector. Here's an example:

main.m
% create a frequency vector with values from 0 to pi
freq = linspace(0, pi, 1000);

% normalize the frequency from 0 to 2*pi
freq_normalized = freq * 2*pi;

% plot the original and normalized frequency vectors
subplot(2,1,1);
plot(freq);
title('Original Frequency Vector');
subplot(2,1,2);
plot(freq_normalized);
title('Normalized Frequency Vector');
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In this example, we first create a frequency vector with values from 0 to π using the linspace() function. We then use element-wise multiplication to scale the frequency vector by 2π using the * operator. Finally, we plot both the original and normalized frequency vectors using the plot() function.