                                                                     connect
Chapter 9 Input Modes

This command invokes an input mode which allows the user to connect map
positions by clearing a path through unwanted raster data and drawing a line.

connect

    Activates mode for connecting points.
     
         connect [-s]

    Activates the connect mode.  This mode allows the user to connect positions
    by punching through unwanted raster garbage to draw a line.  It is
    different from draw line in that it not only draws a line between points,
    but also erases on both sides of the line.  This allows the user to draw
    through garbage on the raster without first erasing it.  The garbage can
    often be eliminated more efficiently through a macro or other
    non-interactive  command.   While in connect mode, sequential x,y locations
    are entered using the continue command.  To start a new set of connected
    points while in the connect mode, execute the start command, followed by
    sequential continue command(s).  The -s option will cause each digitized
    coordinate position to be modified (snapped) to the closest existing point
    (on pixel), within a predefined tolerance (search_radius in pixels; header
    file element).  If no existing point can be located within that radius, the
    position will be recorded as entered.  Note that both the increment and
    decrement command will behave like the continue command.
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    Options/arguments:

         -s        Snap mode activated
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    Example(s):

    To activate the connect mode, with the snapping function on, enter:

         connect -s

    To record subsequent positions as connected, enter:

         continue x y
     
    To start a new set of connected points, enter:

         start x y

    To exit this mode, enter:

         clear_mode

    or enter a new mode command.



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    See also:

              clear_mode, continue, header, start
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