Catchment areas defined
Combine multiple catchment areas
1 In the drawing, select the polygons that define catchment areas.
Right-click. Select Isolate Objects
The polygons are displayed in the drawing window, but all other objects
are hidden.
2 Select the polygons again.
3 On the command line, enter LineWorkShrinkWrap.
A black polygon that contains the combined area of the catchment areas
is displayed. The LineWorkShrinkWrap command creates a single outside
boundary of a selection of touching polygons. The original polygons are
not deleted.
104 | Chapter 5 Surfaces Tutorials
Isolate Selected Objects.
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