1EZHFTN(3NCARG)                   NCAR GRAPHICS                  EZHFTN(3NCARG)
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NAME

6       EZHFTN - draws a half-tone picture from data stored in a rectangular
7       array with the intensity in the picture proportional to the data value.
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UTILITY

10       This routine is part of the Halftone utility in NCAR Graphics. To see
11       the overview man page for this utility, type "man halftone".
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STATUS

14       EZHFTN is obsolete.  It has been replaced by the CPCICA entry of the
15       Conpack contouring package.
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17       EZHFTN continues to be provided for compatibility of early NCAR
18       Graphics codes.  If you are writing new code, we suggest that you use
19       CPCICA.
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SYNOPSIS

22       CALL EZHFTN (Z,M,N)
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DESCRIPTION

25       Z           (an input array of type REAL) defining a two-dimensional
26                   field to be half-tone plotted.
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28       M           (an input parameter of type INTEGER) which is the first
29                   dimension of the Z array.
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31       N           (an input parameter of type INTEGER) which is the second
32                   dimension of the Z array.
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USAGE

35       EZHFTN has a shortened argument list from entry HAFTON which is based
36       upon the following assumptions.
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38       1.  The entire Z array is to be plotted.
39       2.  The lowest value in Z will be at the lowest intensity of the output device.
40       3.  The highest value in Z will be at the highest intensity of the output device.
41       4.  Other values in Z will appear linearly spaced.
42       5.  The maximum number of intensities will be used.
43       6.  The picture will have a perimeter drawn.
44       7.  The frame will be advanced after the picture is drawn.
45       8.  The Z array contains no missing values.
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47       If these conditions are not met, use the HAFTON entry.
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ACCESS

50       To use EZHFTN, load the NCAR Graphics libraries ncarg, ncarg_gks, and
51       ncarg_c, preferably in that order.
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SEE ALSO

54       Online: halftone, hafton, halftone_params, conpack, conpack_params,
55       cpcica
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57       Hardcopy: NCAR Graphics Contouring and Mapping Tutorial; NCAR Graphics
58       Fundamentals, UNIX Version; User's Guide for NCAR GKS-0A Graphics
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61       Copyright (C) 1987-2007
62       University Corporation for Atmospheric Research
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64       This documentation is free software; you can redistribute it and/or
65       modify it under the terms of the GNU General Public License as
66       published by the Free Software Foundation; either version 2 of the
67       License, or (at your option) any later version.
68
69       This software is distributed in the hope that it will be useful, but
70       WITHOUT ANY WARRANTY; without even the implied warranty of
71       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
72       General Public License for more details.
73
74       You should have received a copy of the GNU General Public License along
75       with this software; if not, write to the Free Software Foundation,
76       Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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80UNIX                              March 1993                    EZHFTN(3NCARG)
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