PGPLOT Module: PGSAH -- set arrow-head style


SUBROUTINE PGSAH (FS, ANGLE, BARB)
INTEGER FS
REAL ANGLE, BARB

Set the style to be used for arrowheads drawn with routine PGARRO.


Arguments
FS (input) : FS = 1 => filled; FS = 2 => outline.
Other values are treated as 2. Default 1.
ANGLE (input) : the acute angle of the arrow point, in degrees;
angles in the range 20.0 to 90.0 give reasonable
results. Default 45.0.
BARB (input) : the fraction of the triangular arrow-head that
is cut away from the back. 0.0 gives a triangular
wedge arrow-head; 1.0 gives an open >. Values 0.3
to 0.7 give reasonable results. Default 0.3.