Graphics Programs Reference
In-Depth Information
USING POLYLINES TO SET LINE WEIGHTS
Typically, you would use the Lineweight feature of AutoCAD to set line weights in your drawing. In
cases where the Lineweight feature will not work, you can change the thickness of regular lines and
arcs by using Pedit to change them into polylines and then using the Width option to change their
width. You encounter this use of polylines in some very old AutoCAD drawing files.
Smoothing Polylines
You can create a curve in AutoCAD in many ways. If you don't need the representation of a
curve to be accurate, you can use a polyline curve. In the following exercise, you'll draw a
polyline curve to represent a contour on a topographical map:
1. Open the topo.dwg file. The top image in Figure 17.9 contains the drawing of survey data.
Some of the contours have already been drawn in between the data points.
2. Zoom in to the upper-right corner of the drawing so your screen displays the area shown
in the bottom image in Figure 17.9.
FIGURE 17.9
The topo.dwg file
shows survey data
portrayed in an
AutoCAD drawing.
Notice the dots
indicating where
elevations were
taken. The actual
elevation value
is shown with a
diagonal line from
the point.
 
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