Program sfricker1 | Convolution with a Ricker wavelet. 
[SYNOPSIS]
sfricker1 < in.rsf > out.rsf frequency= freq=0.2 deriv=n
[COMMENTS]

January 2013 program of the month:
http://ahay.org/blog/2013/01/08/program-of-the-month-sfricker1/

[PARAMETERS]
bool    | deriv | =n |  [y/n] | 	apply a half-order derivative filter 
float   | freq | =0.2 |   | 	peak frequency for Ricker wavelet (as fraction of Nyquist) 
float   | frequency | = |   | 	peak frequency for Ricker wavelet (in Hz) 
[DIRECTORY]
system/seismic
