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) 1987-2009
64       University Corporation for Atmospheric Research
65       The use of this Software is governed by a License Agreement.
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69UNIX                              March 1993                    MAPGRD(3NCARG)
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