NAME¶
EZXY - Draws, in a manner determined by the current values of the control
parameters, a complete graph of a single curve through the points
(XDRA(I),YDRA(I)), for I from 1 to NPTS. The argument GLAB may be used to
specify a "graph label", to be placed at the top of the graph.
SYNOPSIS¶
CALL EZXY (XDRA,YDRA,NPTS,GLAB)
C-BINDING SYNOPSIS¶
#include <ncarg/ncargC.h>
void c_ezxy (float *xdra, float *ydra, int npts, char *glab)
DESCRIPTION¶
- XDRA
- (an input array of type REAL, dimensioned NPTS) defines the X coordinates
of points on the curve.
- YDRA
- (an input array of type REAL, dimensioned NPTS) defines the Y coordinates
of points on the curve.
The points on the curve have coordinates (XDRA(I),YDRA(I)), for I from 1 to
NPTS. The current value of 'NULL/1.' (default value "1.E36") may
be used to signal missing data in these arrays. If either coordinate of a
point is missing, the point is considered to be missing; curve segments on
either side of a missing point are not drawn. Note: Because all
non-missing coordinates are used in figuring the minimum and maximum user
values along a given axis, it is safest to mark both coordinates as
"missing".
- NPTS
- (an input expression of type INTEGER) is the number of curve points
defined by the arrays XDRA and YDRA.
- GLAB
- (an input expression of type CHARACTER) defines a new "graph
label". (If the first character of this expression is
"CHAR(0)", no new "graph label" is defined; the
current one will continue to be used.) A character string defining a new
graph label must either be of the exact length specified by the current
value of 'LINE/MAXIMUM.' (default: 40 characters), or shorter; if shorter,
it must be terminated by the character defined by the current value of
text of line number 100 of the label named 'T'.
C-BINDING DESCRIPTION¶
The C-binding argument descriptions are the same as the FORTRAN argument
descriptions.
EXAMPLES¶
Use the ncargex command to see the following relevant examples: agex02, agex06,
agex09, agex10, agex11, agex12, splogy, sprevx, tagupw, tautog, fagezxy,
fspponts.
ACCESS¶
To use EZXY or c_ezxy, load the NCAR Graphics libraries ncarg, ncarg_gks, and
ncarg_c, preferably in that order. To get smoother curves, drawn using spline
interpolation, also load libdashsmth.o. Or, you can use the ncargf77 command
to compile your program and load the above libraries, then, to get smoother
curves, use the -dashsmth option.
SEE ALSO¶
Online: autograph, agback, agbnch, agchax, agchcu, agchil, agchnl, agcurv,
agdshn, aggetc, aggetf, aggeti, aggetp, aggetr, agpwrt, agrstr, agsave,
agsetc, agsetf, agseti, agsetp, agsetr, agstup, agutol, anotat, displa, ezmxy,
ezmy, ezy
Hardcopy: NCAR Graphics Fundamentals, UNIX Version
COPYRIGHT¶
Copyright (C) 1987-2009
University Corporation for Atmospheric Research
The use of this Software is governed by a License Agreement.