ncl_curve (3) - Linux Manuals
ncl_curve: draws the curve defined by a specified series of points
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.
SYNOPSISCALL CURVE (PX,PY,NP)
C-BINDING SYNOPSIS#include <ncarg/ncargC.h>
void c_curve (float *px, float *py, int np)
- (an input array of type REAL) defines the X user coordinates of the curve. Array PX is of length NP.
- (an input array of type REAL) defines the Y user coordinates of the curve. Array PY is of length NP.
- (an input expression of type INTEGER) specifies the number of points in the curve.
C-BINDING DESCRIPTIONThe C-binding argument descriptions are the same as the FORTRAN argument descriptions.
USAGEIf 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.
EXAMPLESUse the ncargex command to see the following relevant examples: sfex01, sfex02, and tsoftf.
ACCESSTo use CURVE or c_curve, load the NCAR Graphics libraries ncarg, ncarg_gks, and ncarg_c, preferably in that order.
COPYRIGHTCopyright (C) 1987-2009
University Corporation for Atmospheric Research
The use of this Software is governed by a License Agreement.
SEE ALSOOnline: 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