1AGGETP(3NCARG) NCAR GRAPHICS AGGETP(3NCARG)
2
6 AGGETP - Allows a user program to get the values of a group of
7 parameters containing one or more elements.
8
10 CALL AGGETP (TPGN,FURA,LURA)
11
13 #include <ncarg/ncargC.h>
14 void c_aggetp (char *tpgn, float *fura, int lura)
16
18 TPGN (an input expression of type CHARACTER) is a character
19 string of the form 'k1/k2/ . . . kn.', where each of the
20 ki's is a keyword. The keyword k1 specifies a group of
21 parameters, k2 a subgroup of that group, k3 a subgroup of
22 that subgroup, etc. The whole string is the name of some
23 group of parameters the user wishes to set.
24 For example, 'AXIS.' is the name of a 92-word group of
26 parameters describing the four axes, 'AXIS/RIGHT.' is the
27 name of a 23-word subgroup describing the right Y axis,
28 'AXIS/RIGHT/INTERSECTION.'
30 is the name of a 2-word further subgroup describing the
32 intersection of the right Y axis with the bottom of the
33 grid window, and
34 'AXIS/RIGHT/INTERSECTION/USER.'
36 is the name of a single parameter specifying the point of
38 intersection of the right Y axis with the bottom of the
39 grid window as an X coordinate in the user coordinate
40 system.
41 Obviously, these names can sometimes become rather long.
43 There are various ways in which they may be shortened.
44 First, since the fifth and following characters of each
45 keyword are ignored, they may be omitted; this would
46 shorten
47 'AXIS/RIGHT/INTERSECTION/USER.'
49 to
51 'AXIS/RIGH/INTE/USER.'
53 Even fewer characters may be used, as long as no ambiguity
55 of interpretation arises. To be completely safe, use at
56 least the first three characters of the group keyword and
57 at least the first two characters of each subgroup keyword;
58 this would shorten the example above to 'AXI/RI/IN/US.'.
59 Moreover, certain group and subgroup keywords may be
60 omitted entirely; for example, 'AXI/RI/IN/US.' may be
61 shortened to 'RI/IN/US.'. Keywords which may be entirely
62 omitted are enclosed in brackets in the headings in the
63 section "PARAMETERS".
64 Names may also be lengthened in various ways in order to
66 improve their readability. Blanks may be used as desired on
67 either side of a keyword. Any sequence of characters not
68 including a slash or a period may be inserted after a
69 keyword, separated from it by at least one blank. For
70 example, the name
71 'DASH PATTERN / CHARACTER WIDTH .'
73 is equivalent to, and considerably more meaningful than,
75 'DAS/CH.' (or even 'DASH/CHARACTER.')
77 FURA (an input array of type REAL, dimensioned LURA) contains
80 new values for the parameters in the group specified by
81 TPGN, in the same order as they appear in the group. All
82 parameters have real values (because of a portability
83 problem which arose in implementing the routines AGSETF and
84 AGSETR). Those which represent intrinsically integral
85 quantities have a value of the form "FLOAT(n)", where "n"
86 is the integral quantity being represented. Some parameters
87 intrinsically take on character-string values; the real
88 quantity stored as the value of such a parameter is
89 typically an identifier allowing for later retrieval of the
90 character string from a character storage area inside
91 Autograph. The routines AGSETC and AGGETC may be used to
92 set/get the character-string values of such parameters.
93 LURA (an input expression of type INTEGER) is the length of
95 FURA. Its value may be less than, equal to, or greater
96 than, the length of the group specified by TPGN. The number
97 of values transferred into FURA is the minimum of the two
98 (but not less than one). You may, for example, get the
99 first two parameters of a 100-parameter group by using LURA
100 = 2.
101
103 The C-binding argument description is the same as the FORTRAN argument
104 description.
105
107 This routine allows you to retrieve the current value of Autograph
108 parameters. For a complete list of parameters available in this
109 utility, see the autograph_params man page.
110
112 To use AGGETP or c_aggetp, load the NCAR Graphics libraries ncarg,
113 ncarg_gks, and ncarg_c, preferably in that order. To get smoother
114 curves, drawn using spline interpolation, also load libdashsmth.o. Or,
115 you can use the ncargf77 command to compile your program and load the
116 above libraries, then, to get smoother curves, use the -dashsmth
117 option.
118
120 See the autograph man page for a description of all Autograph error
121 messages and/or informational messages.
122
124 Online: autograph, autograph_params, agback, agbnch, agchax, agchcu,
125 agchil, agchnl, agcurv, agdshn, aggetc, aggetf, aggeti, aggetr, agpwrt,
126 agrstr, agsave, agsetc, agsetf, agseti, agsetp, agsetr, agstup, agutol,
127 anotat, displa, ezmxy, ezmy, ezxy, ezy
128 Hardcopy: NCAR Graphics Fundamentals, UNIX Version
130
132 Copyright (C) 1987-2009
133 University Corporation for Atmospheric Research
134 The use of this Software is governed by a License Agreement.
135UNIX March 1993 AGGETP(3NCARG)