ncl_gpl (3) - Linux Manuals

ncl_gpl: This output primitive draws

NAME

GPL (Polyline) - This output primitive draws line segments connecting a sequence of user-specified coordinate pairs.

SYNOPSIS

CALL GPL (N, X, Y)

C-BINDING SYNOPSIS

#include <ncarg/gks.h>

void gpolyline(const Gpoint_list *point_list);

DESCRIPTION

N

(Integer, Input) - The number of points in the line to be drawn. N must be larger than one.

X (N)

(Real Array, Input) - The X coordinates (specified in world coordinates) of the N points to be connected by line segments.

Y (N)

(Real Array, Input) - The Y coordinates (specified in world coordinates) of the N points to be connected by line segments.

USAGE

Note that the coordinate pairs must be in world coordinates and not user coordinates. Among other things, this means that the log scaling and mirror-imaging features available via the SET call and the SPPS functions for drawing lines are not applicable here.

ACCESS

To use GKS routines, load the NCAR GKS-0A library ncarg_gks.

COPYRIGHT

Copyright (C) 1987-2009
University Corporation for Atmospheric Research
The use of this Software is governed by a License Agreement.