How to plot Magnitude Response of the Savitzky Golay (SG) Filter using the FVTOOL?
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I have implemented the SG filter using the following code:
y_11 = sgolayfilt(T.Temp, 2, 11)
y_21 = sgolayfilt(T.Temp, 2, 21)
y_31 = sgolayfilt(T.Temp, 2, 31)
I want to plot the Magnitude response of these filters using the FVTOOL (for varying framelenghts in one graph) , How can I do so?
I tried,
fvtool(y_11,y_21,y_31)
But this is not generating desired results.
While if I plot for individual values, then the graphs make seems to be somewhat correct ( I may be wrong) , e.g.
fvtool(y_11)
Kindly guide me with how I can correctly plot the Magnitude Response of the SG filter.
(with or without fvtool, that contains filters of different framelengths in 1 graph, so I can compare the affect of framelength)
Thank you.
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Answers (1)
Hrishikesh Borate
on 15 Jul 2021
Hi,
Following code demonstrates plotting y_11, y_21, y_31 in the same graph using the fvtool.
fvtool(y_11,1,y_21,1,y_31,1);
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