Provided by: libncarg-dev_6.6.2-10build2_amd64 
NAME
MPLNDM - Reads a specified EZMAP database and draws boundary lines from it, masked by a specified area
map.
SYNOPSIS
CALL MPLNDM (FLNM,ILVL,IAMA,XCRA,YCRA,MCRA,IAAI,IAGI,NOGI,ULPR)
C-BINDING SYNOPSIS
#include <ncarg/ncargC.h>
void c_mplndm (char *flnm, int ilvl, int *iama, float *xcra, float *ycra, int mcra, int *iaai, int *iagi,
int nogi, int (*ulpr_)(float *xcra, float *ycra, int *ncra, int *iaai, int *iagi, int *ngps))
DESCRIPTION
FLNM (an input expression of type CHARACTER) specifies the name of the database to be used.
MPLNDM will first look for the files of the specified database in the current working
directory; if the files are not found there, MPLNDM will look for them in the NCAR Graphics
database directory. The database created in 1998 and provided as part of Version 4.1 of NCAR
Graphics is named "Earth..1".
ILVL (an input expression of type INTEGER) specifies the level at which the database is to be
used. The value 1 says to use only land/water boundaries, the value 2 says to add
continental boundaries (like the boundary which separates Africa from Eurasia), the value 3
says to add the boundaries of countries, and the value 4 says to add states. (The value 5
will eventually be used to add counties.)
IAMA (an input/output array of type INTEGER, dimensioned as specified in a call to the AREAS
routine ARINAM) is the array containing the area map against which boundary lines are to be
masked. The area map must have been initialized by a call to ARINAM; it should contain the
edges required to create a desired effect. For example, an area map might be created that
defines a region of interest, within which user data is available and within which boundary
lines are to be drawn.
XCRA and YCRA
(scratch arrays, dimensioned at least MCRA, of type REAL) are to be used by MPLNDM in calls
to the AREAS routine ARDRLN; they will eventually be used in calls to the user-provided line-
processing routine ULPR.
MCRA (an input expression of type INTEGER) is the dimension of the arrays XCRA and YCRA.
IAAI and IAGI
(scratch arrays, dimensioned at least NOGI, of type INTEGER) are to be used by MPLNDM in
calls to the AREAS routine ARDRLN; they will eventually be used in calls to the user-provided
line-processing routine ULPR. The mnemonics stand for "Integer Array of Area Identifiers" and
"Integer Array of Group Identifiers", respectively.
NOGI (an input expression of type INTEGER) is the dimension of the arrays IAAI and IAGI. The
mnemonic stands for "Number Of Group Identifiers (of edges in the area map)", which
determines the required dimension of IAAI and IAGI.
ULPR is the name of the user-supplied line-processing routine. It must be declared EXTERNAL in the
routine that calls MPLNDM, so that the compiler and loader will know that it is the name of a
routine to be called instead of a variable. The user routine ULPR will be called once for
each piece of a boundary line resulting from the masking process; it may decide to draw (or
to not draw) each such piece. ULPR will be called using a FORTRAN statement like
CALL ULPR (XCRA,YCRA,NCRA,IAAI,IAGI,NGPS)
where XCRA and YCRA are real arrays holding the normalized device coordinates of NCRA points
defining a polyline which is part of some boundary line and IAAI and IAGI are integer arrays
holding NGPS area-identifier/group-identifier pairs for the area within which that piece of
the line lies. In writing ULPR, the user may rely upon a SET call's having been done which
makes it possible to use normalized device coordinates in calls to routines like CURVE,
CURVED, GPL, etc. For more details, see the reference document for the package named AREAS
and, in particular, the description of the subroutine ARDRLN.
C-BINDING DESCRIPTION
The C-binding argument description is the same as the FORTRAN argument description.
USAGE
MPLNDM is called to draw the lines defined by the map database whose name is FLNM, masked against the
area map in the array IAMA.
MPLNDM is much like MPLNDR, except that the boundary lines are drawn using calls to MAPITM and MAPIQM,
which does the masking of the lines against an area map and passes the pieces resulting from the masking
process along to a user-provided line-drawing routine.
EXAMPLES
Use the ncargex command to see the following relevant example: mpex11.
ACCESS
To use MPLNDM or c_mplndm, load the NCAR Graphics libraries ncarg, ncarg_gks, and ncarg_c, preferably in
that order.
SEE ALSO
Online: ezmap, ezmap_params, mapaci, mapbla, mapblm, mapdrw, mapeod, mapfst, mapgci, mapgrd, mapgrm,
mapgtc, mapgti, mapgtl, mapgtr, mapint, mapiq, mapiqa, mapiqd, mapiqm, mapit, mapita, mapitd, mapitm,
maplbl, maplmb, maplot, mappos, maproj, maprs, maprst, mapsav, mapset, mapstc, mapsti, mapstl, mapstr,
maptra, maptri, maptrn, mapusr, mapvec, mpchln, mpfnme, mpgetc, mpgeti, mpgetl, mpgetr, mpglty, mpiaty,
mpifnb, mpilnb, mpiola, mpiosa, mpipai, mpipan, mpipar, mpisci, mplnam, mplndr, mplnri, mpname, mprset,
mpsetc, mpseti, mpsetl, mpsetr, supmap, supcon, ncarg_cbind
COPYRIGHT
Copyright (C) 1987-2009
University Corporation for Atmospheric Research
The use of this Software is governed by a License Agreement.
UNIX April 1998 MPLNDM(3NCARG)