Returns a mirror factor (either 1 or -1) that is value-dependent, either by position
of the centroid or the position of the min/max values relative to the x axis.
Syntax
automir(yvec, trigfact,
xvec(optional))
Input
yvec
The dependent vector.
trigfact
A factor between 0 and 1.
A value of 0.5 means that if the mean value of the minimum and maximum
of the dependent vector is below the x axis, the return value will be
-1. If it is above or on the x axis, then the return value will be
1.
A value of 0.3 means that instead of the mean value, this value will be
calculated by the formula max-(max-min)*0.3.
xvec(optional)
The independent vector. If this argument is provided, the position of
the centroid will be used.
Example
This example illustrates how automirror calculates the mirror
factor in a note and uses it in multiple expressions: KTH Injury Risk =
{kth(c1.x, automir(c1.y,0.5)*c1.y,1,0)}Figure 1.
Comments
Sometimes curves (especially injury test curves) are scaled with a factor of -1,
which requires user interaction to evaluate the math correctly. This factor can be
used in any math expression. automir makes reports more robust so
that they incorporate both curves.
