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include "ecidentify.h"
# EC_CENTER -- Locate the center of a feature.
double procedure ec_center (ec, x, width, type)
pointer ec # EC pointer
double x # Initial guess
real width # Feature width
int type # Feature type
double dvalue
real value
real center1d()
double smw_c1trand()
begin
if (IS_INDEFD(x))
return (x)
dvalue = smw_c1trand (EC_PL(ec), x)
if (IS_INDEFD(dvalue))
return (dvalue)
value = dvalue
value = center1d (value, IMDATA(ec,1), EC_NPTS(ec), width,
abs (type), EC_CRADIUS(ec), EC_THRESHOLD(ec))
if (IS_INDEF(value))
return (INDEFD)
else
return (smw_c1trand (EC_LP(ec), double(value)))
end
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