Name:         GRVECT

Purpose:      draw line segments or dots

Category:     GRAPHICS

File:         pgplot.src

Author:       T.J. Pearson

Use:          see description below.

Description:

            SUBROUTINE GRVECT (IDENT,MODE,ABSXY,POINTS,X,Y)
      
       GRPCKG: Draw a line or a set of dots. This routine can be used to
       draw a single line-segment, a continuous series of line segments, or
       one or more single dots (pixels).
      
       Arguments:
      
       IDENT (input, integer): the plot identifier, as returned by GROPEN.
       MODE (input, integer): if MODE=1, a series of line segments is drawn,
             starting at the current position, moving to X(1),Y(1), ... and
             ending at X(POINTS),Y(POINTS).
             If MODE=2, the first vector is blanked, so the line starts at
             X(1),Y(1).
             If MODE=3, a single dot is placed at each coordinate pair, with
             no connecting lines.
       ABSXY (input, logical): if TRUE, the coordinates are absolute device
             coordinates; if FALSE, they are world coordinates and the
             scaling transformation is applied.
       POINTS (input, integer): the number of coordinate pairs.
       X, Y (input, real arrays, dimensioned POINTS or greater): the
             X and Y coordinates of the points.

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