Help in implementing of peak function in Fourier transform

73 Views Asked by Bumbble Comm At 09 Apr 2026 - 1:23

I have a function Peak function enter image description here

I know how to implement it in time range just need to caclulate $r$. first I initial $x$, y with a range and meshgrid them, after it calculate $r$

x=-2:1/100:2;
y=-2:1/100:2;
[x,y]=meshgrid(x,y);
r=sqrt(x.^2 + y.^2);
Peak=1./r;

but when I want go to frequency domain, what is $f$ and how it should be initial?

appreciate any urgent help :(