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

6       MAPGRD - Draws a lat/lon grid.
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SYNOPSIS

9       CALL MAPGRD
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C-BINDING SYNOPSIS

12       #include <ncarg/ncargC.h>
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14       void c_mapgrd()
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DESCRIPTION

17       MAPGRD has no arguments.
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USAGE

20       The statement:
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22            CALL MAPGRD
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24       draws a grid consisting of lines of constant latitude (parallels) and
25       lines of constant longitude (meridians), spaced as specified by the
26       value of the internal parameter 'GR'.  If EZMAP needs initialization or
27       if the value of 'GR' is less than or equal to zero or if there is an
28       uncleared NCAR Graphics error, MAPGRD does nothing.
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30       The grid is drawn using calls to MAPIT and MAPIQ.  By default, MAPGRD
31       temporarily forces the value of the internal parameter 'DL' to zero, so
32       that the grid will be drawn using calls to the routines FRSTD and
33       VECTD, in the dash package.  MAPGRD also temporarily forces the use of
34       the dash pattern defined by the internal parameter 'DA'.  A user
35       version of the routine MAPUSR may be supplied to change the way in
36       which grid lines are drawn.  Before returning control to the user,
37       MAPGRD restores the original value of 'DL' and resets the current dash
38       pattern to be used by the dash package.
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EXAMPLES

41       Use the ncargex command to see the following relevant examples:
42       ccpcica, ccpmovi, cmpclr, cmpdd, cmpgrd, cmplbl, cmplot, cmptit,
43       epltch, ffex02, fpchiqu.
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ACCESS

46       To use MAPGRD or c_mapgrd, load the NCAR Graphics libraries ncarg,
47       ncarg_gks, and ncarg_c, preferably in that order.
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SEE ALSO

50       Online: ezmap, ezmap_params, mapaci, mapbla, mapblm, mapdrw, mapeod,
51       mapfst, mapgci, mapgrm, mapgtc, mapgti, mapgtl, mapgtr, mapint, mapiq,
52       mapiqa, mapiqd, mapiqm, mapit, mapita, mapitd, mapitm, maplbl, maplmb,
53       maplot, mappos, maproj, maprs, maprst, mapsav, mapset, mapstc, mapsti,
54       mapstl, mapstr, maptra, maptri, maptrn, mapusr, mapvec, mpchln, mpfnme,
55       mpgetc, mpgeti, mpgetl, mpgetr, mpglty, mpiaty, mpifnb, mpilnb, mpiola,
56       mpiosa, mpipai, mpipan, mpipar, mpisci, mplnam, mplndm, mplndr, mplnri,
57       mpname, mprset, mpsetc, mpseti, mpsetl, mpsetr, supmap, supcon,
58       ncarg_cbind
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60       Hardcopy: NCAR Graphics Contouring and Mapping Tutorial
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63       Copyright (C) 1987-2007
64       University Corporation for Atmospheric Research
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66       This documentation is free software; you can redistribute it and/or
67       modify it under the terms of the GNU General Public License as
68       published by the Free Software Foundation; either version 2 of the
69       License, or (at your option) any later version.
70
71       This software is distributed in the hope that it will be useful, but
72       WITHOUT ANY WARRANTY; without even the implied warranty of
73       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
74       General Public License for more details.
75
76       You should have received a copy of the GNU General Public License along
77       with this software; if not, write to the Free Software Foundation,
78       Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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82UNIX                              March 1993                    MAPGRD(3NCARG)
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