How to calculate the Power spectral denstity(PSD) function for rough surface from surface profile z(x,y)? i wanted to plot log C(q) vs log (q). Can anybody help me to calculate the PSD For rough surface?

<http://arxiv.org/pdf/cond-mat/0502419.pdf See fig 6 , that i want to plot in matlab >

Answer 1

[Mona Mahboob Kanafi]

Hello,

Probably a little bit late to answer but use below codes for the exact same purposes:

For 2D PSD:

2D Surface roughness power spectrum (2D PSD)

For 1D PSD:

1D Surface roughness power spectrum (1D PSD)