how to make a curve smooth ??

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mary
mary on 1 Nov 2013
Commented: Image Analyst on 7 Dec 2013
if i have a result like a curve with sharp edges and i want to make the curve smooth how do i do this?? e.g like curves of snr vs. ber

Answers (2)

Image Analyst
Image Analyst on 2 Nov 2013
You can use conv() (in base MATLAB), or sgolay() (in the Signal Processing Toolbox) or other functions. For example
windowSize = 9; % or whatever - bigger # = more smoothing.
smoothedSignal = conv(yourSignal, ones(1, windowSize)/windowSize, 'same');
  1 Comment
Image Analyst
Image Analyst on 7 Dec 2013
smoothedSignal is certainly smoother than what you started with. Why do you say it is not? Can you post your data proving it is not smoother?

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sixwwwwww
sixwwwwww on 1 Nov 2013
Dear Mary, you can use smooth function for this purpose. See the following link for more information: http://www.mathworks.de/de/help/curvefit/smooth.html. I hope it helps. Good luck!

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