NAME

       WMDRFT - plots weather map front lines.

SYNOPSIS

       CALL WMDRFT (N, X, Y)

C-BINDING SYNOPSIS

       #include <ncarg/gks.h>

       void c_wmdrft(int n, float *x, float *y)

DESCRIPTION

       N           (Integer, Input) - The number of points supplied in the second and third arguments.

       X           (Real,  Input) - The X coordinates  (specified in world coordinates) of N points that specify
                   the control points of a spline curve that will be fitted to represent the  requested  weather
                   front.

       Y           (Real,  Input) - The Y coordinates  (specified in world coordinates) of N points that specify
                   the control points of a spline curve that will be fitted to represent the  requested  weather
                   front.

USAGE

       Set  the  values  for  the  appropriate  internal parameters before calling WMDRFT to produce the desired
       weather front.  The internal parameters that control the appearance of weather fronts are: ALO, ARC, BEG,
       BET,  CFC, CS1, CS2, COL, DWD, END, FRO, LIN, NBZ, NMS, PAI, REV, SL1, SL2, SLF, STY, SWI, T1C, T2C, WFC,
       and WTY.  The possible fronts are: warm, warm aloft, cold,  cold  aloft,  stationary,  stationary  aloft,
       occluded, convergence line, instability line, intertropical.  As mentioned above, the points specified in
       the X and Y arrays serve as control points for a spline curve that is fitted between the first  and  last
       point.  The spline passes through the given points.  If the desired front line is reasonably smooth, then
       only a few input points need be specified.

ACCESS

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

SEE ALSO

       Online: wmap, wmdflt, wmgetc, wmgeti, wmgetr, wmsetc, wmseti, wmsetr, wmap_params

       Hardcopy: WMAP - A Package for Producing Daily Weather Maps and Plotting Station Model Data

COPYRIGHT

       Copyright (C) 1987-2009
       University Corporation for Atmospheric Research
       The use of this Software is governed by a License Agreement.