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No. 99MBB091A
5)Correct a motif.
(Correction on a unique peak or valley height)
• Calculate the mean R
i
, overall mean R, and standard deviation
R
of the differences in
height between the valley and the peaks on either side of it.
Pj-1
Vhj
Pj
Phj
Vj-1
Vj
Correcting a motif
Ri=
i=1
(
∑
Ri )
Nmr
R=
/ N
=
R
1
N
mr
2
2
1
i=1
Nmr
∑
(Ri - R)
P
j+Pj+i
2
+V
j
• Obtain reference height H
s
.
H
s
=R+1.65
R
(Correcting a peak)
• Compare H
s
with P
hj
, which is the distance from P
j
to an intersection of the perpendicu-
lar line from P
j
and the line connecting V
j-1
and V
j
.
• If H
s
< P
hj
, correct the value of R
i
by moving P
j
so that P
hj
is equal to H
s
.
(Correcting a valley)
• Compare H
s
with V
hj
, which is the distance from V
j-1
to the intersection of the perpen-
dicular line from V
j-1
and the line connecting the corrected P
j-1
and P
j
.
• If H
s
< V
hj
, correct the value of R
i
by moving V
j
so that V
hj
is equal to H
s
.
6)Calculate the roughness motif parameters.
• While selecting motifs with a width greater than LR, obtain the parameters of the
roughness motif.
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