                                                                     corridors
Chapter 11 Raster Manipulation

The corridors command is used to create perimeters of a specified radius around
a defined set of objects.  The object linework remains intact.  Hint: to
effectively create polygonal buffer areas, without the original, enclosed
objects, disconnect one end of the object from the new perimeter and execute a
del_spurs 999999 command.

corridors

    Creates object perimeters at a specified radius.

         corridors s r u

    Creates lines on the raster surrounding the objects in set s at a radius r
    in u units length.  Assembly is required.
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    Options/arguments:

         s         Set number, where:
                   0 - 31, inclusive are valid entries
         r         Radius in predefined units of length
         u         Length units code, where:
                   0 =  pixels
                   1 =  map inches
                   2 =  ground feet
                   3 =  ground miles
                   4 =  map centimeters
                   5 =  ground meters
                   6 =  ground kilometers
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    Example(s):

    To generate corridors around all of the objects in set 6, at a radius of 50
    ground feet, enter:

         corridors 6 50 2
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    See also:

              coord_type, open_solids, mask
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