# 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.