Autodesk CIVIL3D Tutorial - Page 815
Exercise 2: Inserting an Expression Into a Label Style, In the Format Result As list
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7 In the New Expression dialog box, in the Expression field, use the keypad to enter -(15.5*(2*pi/360)) . NOTE Use the button to enter pi. The completed equation looks like this: {Instantaneous Direction}-(15.5*(2*pi/360)) The expression includes a conversion from degrees to radians because AutoCAD Civil 3D uses radians for all internal angle calculations. The value used for declination of magnetic North (-15.5 degrees) is just an example. To be accurate, this must match the current value, subject to geographical location and gradual changes over time. 8 In the Format Result As list, select Direction. 9 Click OK. In Toolspace, on the Settings tab, appears next to the Expressions node, and the new expression appears in the list view. To continue this tutorial, go to Exercise 2: Inserting an Expression Into a Label Style (page 803). Exercise 2: Inserting an Expression Into a Label Style In this exercise, you will insert an expression into an existing label style. After you set up expressions, they are available in the Properties list in the Text Component Editor so that you can add them to label styles. In effect, expressions become new properties that you can use to compose a label style. Expressions are unique to a particular label style type. Only those properties that are relevant to the label style type are available in the Expressions dialog box. For more information, see the AutoCAD Civil 3D Help topic Inserting Expressions into Label Styles as Properties. This exercise continues from Exercise 1: Creating an Expression (page 802). Exercise 2: Inserting an Expression Into a Label Style | 803
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