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Topo USA User Guide
create a connection point before continuing to draw. If you draw the
line over the road/trail without creating a connection point, routing
cannot occur along the intersection.
5. Once you locate the connection point for your new road or trail, click the map
to place the first point. Click point-to-point or drag to add the new road/trail
to the draw layer.
The following information is available as you add each point in your road or
trail:
•
The coordinates of each point display in the corresponding text boxes.
•
The distance and bearing/angle of each new point from its previous
point display in the corresponding text boxes.
6. To finish the line draw for the new road or trail, enter the last point on the
map screen and click Done.
The new road or trail displays on the map with the name you typed in the
Road/Trail Name text box.
You can also finish the line draw by pressing the ENTER key on your keyboard
or double-clicking while entering the last point of the line.
Drawing a Line, Arc, or Spline on the Map
You can add lines, arcs, and splines to a draw file and adjust their line style, color,
width, and display them with map line features.
•
Use lines to mark boundaries or to add railroads or utility lines. You can draw
lines with varied line styles, weights, and colors, including lines that reflect
actual map line types.
•
Use arcs to add curved line features to a draw file. You can draw arcs with
varied line styles, weights, and colors, including lines that reflect actual map
line types.
Note An arc is created by entering only three points on the map. The first
and second points determine the distance of the first arc base from the last
arc base. The third point, placed between the first two, determines the radius
of the arc and fixes the arc in place.
•
Use splines to add trails or any other map feature that contains curves. You
can draw splines with varied line colors, weights, and styles, including lines
that reflect actual map line types.
Note As you draw a spline, points are entered in much the same way as
those entered when creating a line. The difference between a line and a spline
is that when you enter each point, the line segment between the points
curves instead of staying straight.
To Draw a Line, Arc, or Spline
Use the following steps to draw a line/arc/spline.
1. Click the Draw tab.
2. Click and hold the Line/Arc/Spline tool
you want.
3. Select a line/arc/spline style from the Style drop-down list.
4. Click the color button next to the Style drop-down list to select a
line/arc/spline color.
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and select the tool
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