How can i convert the first image(Red) like the second one(Black)?
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Image Analyst
2021-8-1
Use plot() instead of stem().
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Image Analyst
2021-8-2
The black curve in your original post doesn't look smooth to me. But anyway, you can smooth the data and then plot the smoothed data with a sliding polynomial fit filter, sgolayfilt() in the Signal Processing Toolbox.
polynomialOrder = 2; % Larger for less smoothing.
windowWidth = 7; % Larger for more smoothing.
smoothedSignal = sgolayfilt(signal, polynomialOrder, windowWidth);
plot(smoothedSignal, 'b-', 'LineWidth', 3);
grid on;
title('Smoothed Signal', 'FontSize', 20);
If you don't have sgolayfilt(), try movmean().
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