Datasheet

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CHAPTER 1 The Basics of auTocaD civil 3D
cr e a t e be s t fit li n e co m m a n d
The Create Best Fit Line command under the Best Fit drop-down on the Draw panel takes a
series of Civil 3D points, AutoCAD points, entities, or drawing locations and draws a single
best-fit line segment from this information. In Figure 1.39, for example, the Create Best Fit Line
command draws a best-fit line through a series of points that aren’t quite collinear. Note that the
best-fit line will change as more points are picked.
Once you’ve selected your points, a Panorama window appears with a regression data chart
showing information about each point you chose, as shown in Figure 1.40.
This interface allows you to optimize your best fit by adding more points, selecting the check
box in the Pass Through column to force one of your points on the line, or adjusting the value
under the Weight column.
cr e a t e be s t fit ar c co m m a n d
The Create Best Fit Arc command under the Best Fit drop-down works identically to the Create
Best Fit Line command, except that the resulting entity is a single arc segment as opposed to a
single line segment (see Figure 1.41).
Figure 1.39
A preview line
drawn through
points that aren’t
quite collinear
Figure 1.40
The Panorama win-
dow lets you opti-
mize your best fit.
Figure 1.41
A curve created by
best fit
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