Datasheet

The inTerface
|
7
Reference Point Can be used to set a singular point in the drawing field via pick or via
point number, local northing and easting, or grid northing and easting values.
Rotation Point Can be used to set the reference point for rotation via the same methods as
the reference point.
Specify Grid Rotation Angle Enter an amount or set a line to North by picking an angle or
deflection in the drawing. You can use this same method to set the azimuth if desired.
Most engineering firms work on either a defined coordinate system or an arbitrary system, so
none of these changes are necessary. Given that, this tab will be your only method of achieving
the necessary transformation for certain surveying and geographic information system (GIS)–
based and land surveying–based tasks.
Object Layers Tab
Setting object layers to your company standard is a major part of creating the feel you’re after
when using Civil 3D in your office. The nearly 50 objects described here make up the entirety of
the Civil 3D modeling components and the objects you and other users will deal with daily.
Let’s see how to change a parameter in the Object Layers tab. First, click the Layer col-
umn in the Catchment row, as shown in Figure 1.6. Then in the Layer Selection dialog, select
_CATCHMENT and click OK.
One Object at a Time
Note that this procedure only changes the Catchment object. If you want to change the standard of
all the objects, you need to adjust the Catchment Labeling, Catchment Table, Profile, Profile View,
Profile View Labeling, and so on. To do this, it’s a good idea to right-click in the grid view and select
Copy All. You can then paste the contents of this matrix into Microsoft Excel for easy formatting
and reviewing.
Figure 1.5
The Transforma-
tion tab
016817c01.indd 7 5/24/11 10:17:42 AM