Datasheet
20
|
CHAPTER 1 The Basics of auTocaD civil 3D
cr e a t e li n e by Po i n t ob j e c t co m m a n d
The Create Line By Point Object command prompts you to select a point object. To select a point
object, locate the desired start point and click any part of the point. This tool is similar to using
the regular Line command and a Node object snap (also known as osnap).
cr e a t e li n e by Po i n t na m e co m m a n d
The Create Line By Point Name command prompts you for a point name. A point name is a field
in Point properties, not unlike the point number or description. The difference between a point
name and a point description is that a point name must be unique. It is important to note that
some survey instruments name points rather than number points as is the norm.
To use this command, enter the names of the points you want to connect with linework.
cr e a t e li n e by no r t h i n g /ea s t i n g a n d cr e a t e li n e by gr i d no r t h i n g /ea s t i n g
c
o m m a n d s
The Create Line by Northing/Easting and Create Line By Grid Northing/Easting commands let
you input northing (y) and easting (x) coordinates as endpoints for your linework. The Create
Line By Grid Northing/Easting command requires that the drawing have an assigned coordi-
nate system. This command can be useful when working with known surveyed points or fea-
tures in a state plane coordinate system (SPCS).
cr e a t e li n e by la t i t u d e /lo n g i t u d e co m m a n d
The Create Line By Latitude/Longitude command prompts you for geographic coordinates to use
as endpoints for your linework. This command also requires that the drawing have an assigned
coordinate system. For example, if your drawing has been assigned Delaware State Plane NAD83
US Feet and you execute this command, your Latitude/Longitude inputs are translated into the
appropriate location in your state plane drawing. This command can be useful when you are
drawing lines between waypoints collected with a standard handheld GPS unit.
Figure 1.17
A line created
using 640, 643, 644
as input
016817c01.indd 20 5/24/11 10:17:43 AM