NAME

       CPDRPL - Provides a useful polyline-drawer for the routine CPCLDM.

SYNOPSIS

       CALL CPDRPL (XCS, YCS, NCS, IAI, IAG, NAI)

DESCRIPTION

       XCS         (a REAL array of dimension at least NCS, input) is an array containing the X
                   coordinates of NCS points defining a polyline.

       YCS         (a REAL array of dimension at least NCS, input) is an array containing the Y
                   coordinates of NCS points defining a polyline.

       NCS         (INTEGER, input) is the number of points defining the polyline.

       IAI         (an INTEGER array of dimension at least NAI, input) is an array of area
                   identifiers for the area in which the polyline lies. For each I from 1 to NAI,
                   IAI(I) is the area identifier of the area with respect to the edge group
                   IAG(I).

       IAG         (an INTEGER array of dimension at least NAI, input) is an array of group
                   identifiers. See the description of IAI, above.

       NAI         (INTEGER, input) is the number of area identifiers in the array IAI and the
                   number of group identifiers in the array IAG.

USAGE

       If CPCLDM is called, and the only object of using it, instead of CPCLDR, to draw contour
       lines is to avoid drawing the lines through labels, then, in the routine which calls
       CPCLDM, put the declaration

            EXTERNAL CPDRPL

       and, in the call to CPCLDM, use CPDRPL for the argument RTPL. Each time CPDRPL is called,
       it draws the polyline defined by its first three arguments if, and only if, none of the
       area identifiers defined by the other three arguments is negative.

ACCESS

       To use CPDRPL, load the NCAR Graphics libraries ncarg, ncarg_gks, and ncarg_c, preferably
       in that order.

SEE ALSO

       Online: conpack, cpback, cpchcf, cpchcl, cpchhl, cpchil, cpchll, cpcica, cpclam, cpcldm,
       cpcldr, cpcltr, cpcnrc, cpezct, cpgetc, cpgeti, cpgetr, cplbam, cplbdr, cpmpxy, cpmviw,
       cpmvrw, cppkcl, cppklb, cprect, cprset, cpscae, cpsetc, cpseti, cpsetr, cpsps1, cpsps2,
       ncarg_cbind

       Hardcopy: NCAR Graphics Contouring and Mapping Tutorial

COPYRIGHT

       Copyright (C) 1987-2009
       University Corporation for Atmospheric Research

       The use of this Software is governed by a License Agreement.