NAME

       EZVEC - A front-end to VELVCT with a simpler interface. Like VELVCT, it plots a a vector
       field in a single call.

SYNOPSIS

       CALL EZVEC (U,V,M,N)

STATUS

       EZVEC is obsolete, and is supported only to provide compatibility with old NCAR Graphics
       codes. However, the compatibility mode parameter, CPM, offers a number of options to help
       ease the the transition to the new version of the utility. When writing new code you are
       encouraged not to use this entry point, since it provides less capability than the
       standard Vectors interface, and may eventually be phased out.

C-BINDING SYNOPSIS#

       #include <ncarg/ncargC.h>

       void c_ezvec (float *u, float *v, int m, int n)

DESCRIPTION

       U           (REAL 2-dimensional array, dimensioned M x n: n >= N, input) By default,
                   assumed to contain the first dimensional Cartesian components of the vector
                   field. However, if PLR is non-zero, it is treated as containing the vector
                   magnitudes.

       V           (REAL 2-dimensional array, dimensioned M x n: n >= N, input) By default,
                   assumed to contain the second dimensional Cartesian components of the vector
                   field.  However, if PLR is non-zero, it is treated as containing the vector
                   angles.

       M           (INTEGER, input) Actual size of the first dimension of arrays U and V

       N           (INTEGER, input) Assumed size of the second dimension of arrays U and V.

C-BINDING DESCRIPTION

       The C-binding argument descriptions are the same as the FORTRAN argument descriptions with
       the following exceptions:

       m           The actual size of the second dimension of arrays u and v.

       n           The assumed size of first dimension of arrays u and v.

USAGE

       U and V are 2-dimensional vector component arrays, whose actual first dimensions must be
       equal to the value of M, and whose second dimensions must equal or exceed the value of N.

       Assuming the default value of the compatibility mode parameter, CPM, Vectors always
       performs a SET call and draws a perimeter around the plot when accessed through the EZVEC
       interface. Before the return from EZVEC, another call to SET restores the previous
       coordinate system mapping.

       By modifying the value of CPM, you may take more control over the utility than originally
       possible using this entry point. For instance, you can override the default value of the
       SET parameter, or use the Version 3.2 coordinate system mapping routines instead of the
       old FX, FY, MXF, and MYF functions. Nevertheless, when creating new code, use the
       VVINIT/VVECTR interface, since its capabilities are greater and more likely to improve
       with time.

EXAMPLES

       Use the ncargex command to see the following relevant example: tvelvc.

ACCESS

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

SEE ALSO

       Online: vectors, vectors_params, fx, velvct, vvectr, vvgetc, vvgeti, vvgetr, vvinit,
       vvrset, vvsetc, vvseti, vvsetr, vvudmv, vvumxy, ncarg_cbind.

COPYRIGHT

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

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