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include "identify.h"
# ID_DOSHIFT -- Minimize residuals by constant shift.
procedure id_doshift (id, interactive)
pointer id # ID pointer
int interactive # Called interactively?
int i, j
double shft, delta, rms, id_fitpt()
begin
shft = 0.
rms = 0.
j = 0
for (i=1; i <= ID_NFEATURES(id); i = i + 1) {
if (IS_INDEFD (USER(id,i)) || WTS(id,i) == 0.)
next
delta = USER(id,i) - id_fitpt (id, PIX(id,i))
shft = shft + delta
rms = rms + delta * delta
j = j + 1
}
if (j > 0) {
shft = shft / j
rms = rms / j
if (interactive == YES) {
call printf ("%s%s: Coordinate shift=%5f, rms=%5f, npts=%3d\n")
call pargstr (ID_IMAGE(id))
call pargstr (ID_SECTION(id))
call pargd (shft)
call pargd (sqrt (rms - shft ** 2))
call pargi (j)
}
ID_SHIFT(id) = ID_SHIFT(id) + shft
ID_NEWCV(id) = YES
ID_NEWGRAPH(id) = YES
}
end
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