Monday, June 7, 2010

Creating buffers in Global Mapper




Buffer zones can be easily created in Global Mapper. The buffers can be merged and/or zoned depending on the parameters you choose during the creation.

The following steps can be used to create buffers using Global Mapper.
  1. Start up Global Mapper and open up a data file or create some line work to create buffers.

    The figure below shows two line geometries.

  2. Press ALT+D to activate the Digitizer Tool. Drag a box to select the geometries for buffering.

    The geometries are selected.


  3. Press a right click on the mouse.

    A pop up menu appears.

  4.  Choose Advanced Feature Creation Option | Create Buffers Around Selected Features.

    The Setup Buffer Area Creation dialog box appears.
  5. In the Number of Buffer Zones for Each Feature field, type in a value e.g. 1.
  6. In the Buffer Distance field, type in a value e.g. 100,
  7. Toggle on or off Combine Overlapping Buffer Areas.
  8. Click OK.

    The buffer(s) is created. By default the buffer(s) is created selected.
     
An example of a single, combined buffer is shown in the figure below.



An uncombined single buffers are shown in the figure below.

The figure below shows an example of combined buffers with multiple zones.


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