Syntax:
set arrow {tag} {from sx,sy} {to ex,ey} set noarrow {tag} show arrow
Curly braces {} denote optional items. All positions x,y default to 0,0. The x and y values are in the graph's coordinate system. The tag is an integer that is used to identify the arrow. If no tag is given, the lowest unused tag value is assigned automatically. The tag can be used to delete or change a specific arrow. To change any attribute of an existing arrow, use the set arrow command with the appropriate tag, and specify the parts of the arrow to be changed. Arrows outside the plotted boundaries are permitted but may cause device errors; use at your own risk.
Examples:
To set an arrow pointing from the origin to (1,2) use
set arrow to 1,2To set an arrow from (-10,4) to (-5,5), and tag the arrow number 3, use:
set arrow 3 from -10,4 to -5,5To change the preceding arrow begin at 1,1, use
set arrow 3 from 1,1To delete arrow number 2 use:
set noarrow 2To delete all arrows use:
set noarrowTo show all arrows (in tag order) use:
show arrow