1CONRAN(3NCARG) NCAR GRAPHICS CONRAN(3NCARG)
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6 CONRAN - draws a two dimensional contour map from irregularly
7 distributed data. The contour lines may be smoothed.
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10 CONRAN is approaching obsolescence. If you have available an
11 interpolation package which can do a random to gridded interpolation
12 equal to that built into the Conran_family, then we recommend that you
13 grid your dataset and use the Conpack utility instead. Refer to the
14 conpack and conpack_params man pages as well as the NCAR Graphics
15 Contouring and Mapping Tutorial.
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18 This routine is part of the Conran_family in NCAR Graphics. To see the
19 overview man page for this utility, type "man conran_family".
20
22 CONRAN (XD,YD,ZD,NDP,WK,IWK,SCRARR)
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25 XD Input, real array -- of dimension NDP containing the X
26 coordinates of the data points.
27 YD Input, real array -- of dimension NDP containing the Y
29 coordinates of the data points.
30 ZD Input, real array -- of dimension NDP containing the data
32 values at the points.
33 NDP Input, integer -- is the number of data points to be
35 contoured. NDP must be 4 or larger.
36 WK Input, real array -- workspace of dimension 15*NDP.
38 IWK Input, integer array -- workspace which must be dimensioned
40 at least IWK((27+NCP)*NDP).
41 The parameter NCP controls the number of data points to be
43 used in the interpolation. Increasing NCP causes more of
44 the surrounding data to influence the point of
45 interpolation. In the case of linear interpolation NCP is
46 always 4. In the case of C1 interpolation, NCP can vary
47 from 2 to 25 with 4 as the default.
48 The interpolation option is selected using parameter ITP.
50 See the conran_family_params man page for a description of
51 all internal parameters.
52 SCRARR Real work array of dimension at least (RESOLUTION**2) where
54 RESOLUTION is 40 by default.
55 Alternate resolutions are set using parameter SSZ. See the
57 conran_family_params man page.
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60 The contours will be drawn as smoothed dashed or solid lines using
61 splines under tension. There may be characters along the lines. Many
62 other options are available through the use of internal parameters.
63 See the conran_family_params man page.
64 Quick and super versions of the Conran_family are also available
66 through entries CONRAQ and CONRAS, respectively.
67
69 Use the ncargex command to see the relevant example tconan.
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72 CONRAN can be invoked in two different ways. The standard version
73 produces contour plots which connect interpolated values on the
74 boundary of the interpolation triangles. The smooth version produces
75 contours which are smoothed using splines under tension.
76 To use standard CONRAN, load the NCAR Graphics libraries ncarg,
78 ncarg_gks, and ncarg_c, preferably in that order. To run the smooth
79 option an additional library, dashsmth is needed. It can be loaded by
80 the user directly, along with the above three standard libraries, or
81 loaded implicitly through the use of the -smooth option of the ncargf77
82 command. To run a code called mycode.f which has one or more calls to
83 entry CONRAN, issue one of the commands:
84 NORMAL Command: "ncargf77 mycode.f"
87 The contours will be drawn as unsmoothed dashed or solid
89 lines that can include characters along the lines.
90 SMOOTH Command: "ncargf77 -smooth mycode.f"
94 The contours will be drawn as smoothed dashed or solid lines
96 that can include characters along the lines.
97
99 See the conran_family man page for a description of all Conran_family
100 error messages and/or informational messages.
101
103 Online: conraq, conras, conran_family_params, conran_family, conop1,
104 conop2, conop3, conop4, conpack, conpack_params, bivar,
105 dashline_family, ncargf77
106 Hardcopy: NCAR Graphics Contouring and Mapping Tutorial; NCAR Graphics
108 Fundamentals, UNIX Version; User's Guide for NCAR GKS-0A Graphics
109
111 Copyright (C) 1987-2007
112 University Corporation for Atmospheric Research
113 This documentation is free software; you can redistribute it and/or
115 modify it under the terms of the GNU General Public License as
116 published by the Free Software Foundation; either version 2 of the
117 License, or (at your option) any later version.
118 This software is distributed in the hope that it will be useful, but
120 WITHOUT ANY WARRANTY; without even the implied warranty of
121 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
122 General Public License for more details.
123 You should have received a copy of the GNU General Public License along
125 with this software; if not, write to the Free Software Foundation,
126 Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
127UNIX March 1993 CONRAN(3NCARG)