Hi,
At first, I congratulate for your perfect toolbox that is sufficiently to help me & other.
I want to smooth my 3251*1 signal with Fastsmooth function, but I not familiar with makegrid and get the below error after run the command :
??? Error using ==> times
Matrix dimensions must agree.
Error in ==> smooth at 83
mat_sm = real(ifftn(fftn(mat).*ifftshift(win)));
My signal delta or sample rate is 0.02 s.
Pls, help me for define proper kgrid to smooth my signal.
Best Regards
Mehran
Hi Mehran,
To use smooth, you should use the following syntax:
x = rand(100, 1);
y = smooth(makeGrid(100, 1), x);
plot(x, 'k-'); hold on; plot(y, 'b-');The filter (a Blackman window by default) is normalised in frequency space, so it doesn't depend on what grid spacing you use for makeGrid. You could do same thing more directly by defining your own window. For example:
x = rand(100, 1);
win = getWin(100, 'Blackman');
y = real(ifft(ifftshift(win).*fft(x)));
plot(x, 'k-'); hold on; plot(y, 'b-');Hope that helps,
Brad.
You must log in to post.