Name:         PGSAH

Purpose:      set arrow-head style

Category:     GRAPHICS

File:         pgplot.src

Author:       T.J. Pearson

Use:          see description below.

Description:

            SUBROUTINE PGSAH (FS, ANGLE, BARB)
            INTEGER  FS
            REAL ANGLE, BARB
      
       Set the style to be used for arrowheads drawn with routine PGARRO.
      
       Argument:
        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.

Updates:      Oct 16, 1998: JPT automatically extracted from source.