5.4. - lc line-control mode
allows multiply segmented lines to be drawn from a data set and/or
the filling of shapes formed by consecutive data points.
lc
or
lc state
Line-control mode lets you draw multiply segmented lines from a single
data set, or draw filled shapes.
Line-control information instructs
the program whether to move to a point with the pen up or down while
drawing with one of the line symbols.
(With graphics filters, line-control
information instructs the filter whether to draw continuously or not.)
Line-control information is associated with each point.
A
0 (or blank) in the line-control column of a file provides continuous
drawing.
A
1 instructs the program to move to that point with
the pen up.
(The first point is always reached with pen up.)
A
2 in the line-control column also means to move to the point with pen
up, but the figure formed by subsequent points with
0 line control
will be filled with the current
"white"
fill color.
Entered without parameters,
lc toggles line-control mode on
and off.
If the command is entered with a
0 as an argument,
line-control mode is turned off.
Entered with a
1, it is turned
on.
For example, with line-control mode on, the following 24 data points
produce the displayed shapes:
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