CURVE - draws the curve defined by a specified series of points in the user coordinate system. The "pen"

       To  use  CURVE  or c_curve, load the NCAR Graphics libraries ncarg, ncarg_gks, and ncarg_c, preferably in
       that order.

       The C-binding argument descriptions are the same as the FORTRAN argument descriptions.

       #include <ncarg/ncargC.h>

       void c_curve (float *px, float *py, int np)

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

UNIX                                               March 1993                                      CURVE(3NCARG)

       PX          (an  input  array  of type REAL) defines the X user coordinates of the curve.  Array PX is of
                   length NP.

       PY          (an input array of type REAL) defines the Y user coordinates of the curve.  Array  PY  is  of
                   length NP.

       NP          (an input expression of type INTEGER) specifies the number of points in the curve.

       Use the ncargex command to see the following relevant examples: sfex01, sfex02, and tsoftf.

       CURVE - draws the curve defined by a specified series of points in the user coordinate system.  The "pen"
       (for subsequent calls to FRSTPT, VECTOR, PLOTIF, and PLOTIT) is left at the location of the last point in
       the curve.

       Online: gpl, gsln, gslwsc, gscr, gsplci, frstpt, vector, plotif, line, spps, spps_params, ncarg_cbind

       Hardcopy: NCAR Graphics Fundamentals, UNIX Version User's Guide for NCAR GKS-0A Graphics; "The Use of X/Y
       Coordinates in NCAR Graphics" SCD User Document

       CALL CURVE (PX,PY,NP)

       If  the  routine  SET  was  not  called,  or  if  it was called with a linear mapping in both the X and Y
       coordinates, then the GKS routine GPL is called to output a polyline of length NP points.  If the mapping
       in either axis is logarithmic, the input coordinates are transformed and drawn ten points at a time. (The
       last segment may be less than ten points.)

       Polyline type, line width, and color can also be set by calling the GKS routines GSLN, GSLWSC, GSCR,  and
       GSPLCI, before calling CURVE.