<xshift x= -12.7 dx= .10 />
<xshift x= 12.7 dx= .10 />
<xshift x= 315.5 dx= .30 />
<xshift x= 584.0 dx= .46 />
<xshift x= 886.8 dx= .78 />
</plate>
<plate tower=3 side=U>
<xshift x= -886.8 dx= -.52 />
<xshift x= -584.0 dx= -.30 />
<xshift x= -252.0 dx= -.08 />
<xshift x= -12.7 dx= .10 />
<xshift x= 12.7 dx= .08 />
<xshift x= 315.5 dx= .12 />
<xshift x= 584.0 dx= .23 />
<xshift x= 886.8 dx= .40 />
</plate>
</profile>
Note that the xshift element has two attributes: x, which is the
horizontal distance across the web; and dx, which is the displacement
from the base separation.
The profile also specifies how the measurements are spaced along the
plate with the measurePosition element, and the measureShift element
specifies the units used for the displacement measurements
themselves.
Example 2: Nonlinear web growth profile (across and
around the drum)
In this example, measurements are made across the drum (on the x
axis), and around the drum (on the y axis). Across the drum,
measurements are made every 8 inches and displacements are
measured in 1-millimeter increments:
<measurePosition x = 8 unit = inch />
<measureShift x = 1 unit = mm />
The x origin (the across-the-drum measurement) is at the centre of the
plate, and so the left-hand x coordinates are negative, and the right-
hand coordinates are positive. If the plate is 44 wide, and the first
measurement is 2 in from the left edge, this left-most x coordinate will
be (44/2 - 2) / 8 = -2.5. Because the measurements are spaced by
732
Chapter 12—Outputs
