2011

To specify a filter at the Command prompt, enter a period and one or more
of the letters X, Y, and Z. The next entry is limited to a specific coordinate
value.
Example: Use of Coordinate Filters in 2D
In the following illustration, the hole in the holding plate was centered in the
rectangle by extracting the X,Y coordinates from the midpoints of the plate's
horizontal and vertical line segments.
Here is the Command prompt sequence:
Command: circle
Specify center point for circle or [3P/2P/Ttr (tangent tangent radius)]: .x
of: mid
of: Select the horizontal line on the lower edge of the holding plate
of: (need YZ): mid
of: Select the vertical line on the left side of the holding plate
of: Diameter/<Radius> Specify the radius of the hole
Coordinate filters work only when the program prompts you for a point. If
you try to use a coordinate filter at the Command prompt, you see an error
message.
Example: Use of Coordinate Filters in 3D
This example shows how to use coordinate filters to create a point object at
the center (centroid) of a 3D object. Hidden lines have been removed for
clarity. The X value of the new point is extracted from the first location
specified, the Y value from the second location, and the Z value from the third.
The three values are combined to form the coordinate values of the new point.
Command: point
Point: .x
of mid
of select object (1)
(need YZ): .y
of mid
of select object (2)
(need Z): mid
242 | Chapter 16 Use Precision Tools