Map GPS Coordinates - GPS Map Coordinates ... - Global Mapper

Combining Area and Line Features
You can combine overlapping or adjacent area features into a single area feature by first selecting the area
features to combine, then selecting the Combine Selected Area Features right-click menu option. Any areas
that are succesfully joined into a new one will be marked as deleted.
You can combine multiple line features into a single line feature by first selecting the line features to combine,
then selecting the Combine Selected Line Features right-click menu option. This option will connect any lines
that you have selected that join at an endpoint. Any lines that are succesfully joined into a new one will be
marked as deleted.
When you select the option you will be allowed to setup options for the combine operation, including whether
or not the attributes of the lines have to much to be combined, if the lines being joined have to fully close, and
whether or not to create multiple areas if the selected lines don't all form a single path.
Finding the Intersection of Multiple Area Features
You can find the intersection of two area features by selecting both features, then right clicking and selecting
the Find Intersection of Selected Area Features menu command. This operation will create a new area feature
from the intersection of the two selected area features. You will also be prompted to create new area features
from what is left outside of the intersection. If you choose this option then the original area features will be
marked as deleted once the operation completes successfully.
Cutting Areas From/Adding Islands to Area Features
Global Mapper User's Manual
You can cut one area feature shape out of another area shape, either adjusting the second areas outer boundary
or making the first area feature become an island, or hole, within the second area by first selecting the area(s)
that you want to cut from another area/make into an island, then right click and select the Cut Selected Area(s)
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