


[slope, int] = findedge(cent, nlin)
fit linear equation to data, written to process edge location array
cent = array of (centroid) values
nlin = length of cent
slope and int are from the least-square fit
x = int + slope*cent(x)
Note that this is the inverse of the usual cent(x) = int + slope*x
form
Author: Peter Burns, 1 Oct. 2008
Copyright (c) 2007 Peter D. Burns