1HALFAX(3NCARG) NCAR GRAPHICS HALFAX(3NCARG)
2
6 HALFAX - Draws orthogonal axes intersecting at a specified point and
7 with a specified set of labels.
8
10 CALL HALFAX (MJRX,MNRX,MJRY,MNRY,XINT,YINT,IXLB,IYLB)
11
13 #include <ncarg/ncargC.h>
14 void c_halfax (int mjrx, int mnrx, int mjry, int mnry,
16 float xint, float yint, int ixlb, int iylb)
17
19 MJRX, MNRX, MJRY, and MNRY
20 (input expressions of type INTEGER) specify the major and
21 minor divisions of the horizontal (X) and vertical (Y) axes
22 of the current viewport. The meanings of these parameters
23 depend on the current setting of the internal parameter
24 ´LS´ of SPPS:
25 · If the value of ´LS´ implies that the axis is
27 linear: MJRX(Y) specifies the number of major
28 divisions of the X(Y) axis and MNRX(Y) specifies the
29 number of minor divisions within each major
30 division. In each case, the value specifies the
31 number of spaces between grid lines or ticks rather
32 than the number of lines or ticks. Including the
33 ones at the ends of the axes, there is always one
34 more major division line or mark than the number of
35 major divisions specified by MJRX(Y). Similarly,
36 there is always one less minor division line or tick
37 per major division than the number of minor
38 divisions per major division specified by MNRX(Y).
39 · If the value of ´LS´ implies that the axis is
41 logarithmic: Each major division point occurs at a
42 value 10**MJRX(Y) times the previous point. For
43 example, if the minimum X-axis value were 3., the
44 maximum X-axis value 3000. and MJRX 1, then the
45 major division points would be 3., 30., 300., and
46 3000. If MNRX(Y).LE.10, there are nine minor
47 divisions within each major division. For example,
48 between 3. and 30., there would be minor division
49 points at 6., 9., 12., . . . 27. If MNRX(Y).GT.10.,
50 minor divisions are omitted.
51 XINT and YINT
53 (input expressions of type REAL) are the user coordinates
54 of the point of intersection of the two axes.
55 IXLB (an input expression of type INTEGER) is defined as
57 follows:
58 · IXLB = -1 implies that no X axis is to be drawn.
60 · IXLB = 0 implies that the X axis is to be drawn
62 unlabeled.
63 · IXLB = 1 implies that the X axis is to be drawn and
65 labeled.
66 IYLB (an input expression of type INTEGER) is defined as
68 follows:
69 · IYLB = -1 implies that no Y axis is to be drawn.
71 · IYLB = 0 implies that the Y axis is to be drawn
73 unlabeled.
74 · IYLB = 1 implies that the Y axis is to be drawn and
76 labeled.
77
79 The C-binding argument descriptions are the same as the FORTRAN
80 argument descriptions.
81
83 The statement
84 CALL HALFAX (MJRX,MNRX,MJRY,MNRY,XINT,YINT,IXLB,IYLB)
86 is equivalent to
88 CALL GRIDAL (MJRX,MNRX,MJRY,MNRY,IXLB,IYLB,10,XINT,YINT)
90
92 Use the ncargex command to see the following relevant example: tgrida.
93
95 To use HALFAX or c_halfax, load the NCAR Graphics libraries ncarg,
96 ncarg_gks, and ncarg_c, preferably in that order.
97
99 Online: gridall, gacolr, gagetc, gageti, gagetr, gasetc, gaseti,
100 gasetr, grid, gridal, gridl, labmod, perim, periml, tick4, ticks,
101 ncarg_cbind.
102 Hardcopy: NCAR Graphics Fundamentals, UNIX Version
104
106 Copyright (C) 1987-2007
107 University Corporation for Atmospheric Research
108 This documentation is free software; you can redistribute it and/or
110 modify it under the terms of the GNU General Public License as
111 published by the Free Software Foundation; either version 2 of the
112 License, or (at your option) any later version.
113 This software is distributed in the hope that it will be useful, but
115 WITHOUT ANY WARRANTY; without even the implied warranty of
116 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
117 General Public License for more details.
118 You should have received a copy of the GNU General Public License along
120 with this software; if not, write to the Free Software Foundation,
121 Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
122UNIX March 1993 HALFAX(3NCARG)