Thread Subject: Hurst Exponent using Power Spectral Density

Hi all,
I am wondering if you could help me to estimate PSD from a
discrete series that represents measurements versus Depth.
after constructing PSD, i need to estimate Hurst Exponent
by plotting PSD versus frequency on a log-log plot and get
the slope.

The data looks like X(depth)= .1, .2,.......,
and X-axis values look like =0, .5, 1,......,100

your fast response is highly appreciated.

Ammal