Synopsis
		sfhistogram < in.rsf > out.rsf n1= o1= d1=

The output grid is not centered on the bins; it marks their "left edge".
I.e., the first sample holds the number of values between o1 and o1+d1.

February 2015 program of the month:
http://ahay.org/blog/2015/03/01/program-of-the-month-sfhistogram/

Parameters
		float d1= histogram sampling   int n1= number of histogram samples   float o1= histogram origin

Used In
		GEO384H          hw1/dem hw3/compress   GEO384S          hw1/clip hw2/land3d   RSF          rsf/sfnoise school/austin tutorials/lineaments tutorials/petro1 tutorials/petro2   SEP          geostat/miss   TCCS          phase/boon3