How to stretch a 1-D signal over the axes

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Ayesha
Ayesha 2014-1-31
评论： Ayesha 2014-1-31
I basically want to compare the original signal with the output signal which has been shortened and hence I want to observe it after stretching it over the axes. For instance, the original signal goes from 0-500 and the output signal goes from 0-250. How would I stretch the output signal from 0-500 over the axes?

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回答（2 个）

Amit
Amit 2014-1-31
If you mean just making the limits same for both plots, you can just multiply the whole x-axis of your output signal with something like a factor :
factor = original_signal_x(end)/output_signal_x(end);
Walter Roberson
Walter Roberson 2014-1-31
times1 = 0 : 500;
times2 = 0 : 250;
subplot(1,2,1);
plot(times1, original_signal, times2, shorter_signal);
title('without any stretching');
subplot(1,2,2);
plot(times1, original_signal, 2*times2, shorter_signal);
title('with stretching');

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