Graphics Programs Reference
In-Depth Information
The following Civil 3D features enable you to convert raw field data into
drawing information.
linework Code Set
To create linear features using connected points, someone has to tell those features
when to start, when to end, when to draw curves, when to draw straight lines, and
so on. In other words, it can be a bit more complicated than “Draw a line from
point 1 to point 2.” Field crews use codes to carry out these geometric instructions.
For example, they might include the string BEG when locating the first point on
a fence line, which means to begin a new feature at that point. The linework code
set correlates these field codes with instructions that control the generation of
linework in the drawing. This is the way of telling Civil 3D that BEG means “begin
drawing here,” BCV means “begin curve here,” and so on. Another way to think of a
linework code set is as a translator between field language and Civil 3D language.
Exercise 3.3: Apply a linework Code Set
In this exercise, you'll assign a linework code set to your drawing and apply it to
points that have been imported.
If you haven't already done so, go to the topic's web page at
www.sybex.com/
go/civil3d2015essentials
and download the files for Chapter 3. Unzip the files
to the correct location on your hard drive according to the instructions in the
introduction. Then, follow these steps:
The
Essentials 2
database is the result of
correctly completing the
previous exercise. This
database is provided to
ensure that you start
the current exercise
with the correct version.
1.
Open the drawing named
Linework Code Set.dwg
located in the
Chapter 03
class data folder.
2.
Click the Survey tab of the Toolspace.
◀
3.
If the contents beneath the
Essentials 2
survey database are not
visible, right-click
Essentials 2
and select Open For Edit.
If you receive an
error message here,
you may not have
installed the datasets
correctly. Refer to
the Introduction for
instructions on install-
ing the datasets.
4.
Expand Import Events. Right-click
Topo Survey.txt
, and select
Properties.
5.
Click the Browse icon next to File to open the text file. Notice the
codes BEG, BCV, ECV, and END. These are the codes used in the field
to represent Begin Feature, Begin Curve, End Curve, and End Feature.
If you scroll down in the text file, you'll also see the CLS code, which
represents Close Feature.
◀
6.
Close the text file, and click Cancel to dismiss the Import Event
Properties dialog box.
