2012

DescriptionColumn
Displays the real number or the equation
for the expression, for example, d1+d2
Expression
Displays the value of the expressionValue
Additional Columns
Displays the dimensional constraint type
or variable value
Type
Displays the comments or notes associated
with the user variable
Description
Create a Dimensional Variable
To create a dimensional variable, you apply a dimensional constraint to an
object in the drawing. Dimensional variables are displayed under the
Dimensional Constraint Parameters group header in the Parameters Manager
palette.
User variables are custom variables that enable you to create and drive object
relationships. These variables can contain constants, or equations.
Click the New User Parameter icon on the Parameters Manager palette to
create a user variable. Alternatively, double-click an empty cell to create a
user-defined variable.
User variables have the following characteristics:
■ Default values are: Name = user1, Expression = 1, and value = 1.00.
■ Name should be alphanumeric and cannot begin with a number, contain
spaces, or exceed 256 characters.
■ Expression values should be within the range of -1e100 and 1e100.
Edit a Dimensional Variable
You can edit the dimensional variable name and expression. To do so:
■ Double-click the name or expression box.
■ Select the row and press F2. Press the Tab key to edit the contiguous
columns.
You cannot edit the Value column.
1418 | Chapter 16 P Commands