These codes will calculate the angular autocorrelation function for a data set 
and random sample.  Can also split the sample into 16 equal area pixels and 
perform a jackknife error calculation, as well as fit the autocorrelation 
(using both the variance and the full covariance matrix).  Will also make plots.

ang_cluster.pro can do everything all at once (by calling the other procedures), 
if the appropriate keywords are set.  Or, the codes can be run independently.  
See the headers for more details.

model_autocorr.pro Will use camb (and my camb4idl wrapper) to generate a matter 
power spectrum and model autocorrelation function.  It currently is not well tested 
outside the range ~0.001-2 degrees.  We aware you may have to tweak the wavenumber
settings in CAMB if you go outside this range.