glenda.party
term% ls -F
term% cat index.txt
VIEW2D(3X)                                                          VIEW2D(3X)



NAME
       view2d, moviefil - movie of a function f(x, y, t)

SYNOPSIS
       view2d(fd, nx, ny, time, u, v, fixuv, pmin, pmax, p)
       short p[];
       double time;

       moviefil(fd, nx, ny, time, outside, f)
       float time, outside, f[];

DESCRIPTION
       View2d  writes  a frame in the format view2d(5) onto the file specified
       by fd, a file descriptor for an open file.  Use ld(1) option  -lview2d.
       Nx, ny give the grid size.  Time is a (nondecreasing) frame index, typ‐
       ically set to simulation time or iteration count.  U and v describe the
       relation between pixel values and user function values:

              p = u + f/2∗∗v.

       U  and  v may vary from one frame to the next.  When the global scaling
       is known beforehand, put fixuv = 1 and set pmin and pmax to the  limits
       of the data.  (Otherwise put fixuv=0; pmin and pmax will be ignored.)

       P  is  the  nx  by  ny  array of pixel values, with the x index running
       fastest.  There is a threshold for describing  nonrectangular  regions:
       any  pixel  value  less than or equal to -32766 is treated as an out of
       bounds marker and will appear as black.  Other pixel values should  lie
       in the range [-32765,32765].

       Moviefil  is  an  alternate  version that is somewhat less flexible but
       easier to use.  It takes floats and  scales  automatically  to  shorts.
       Any array element f[i][j] less than outside is treated as undefined and
       will appear as black.

SEE ALSO
       view2d(1), view2d(5)



                                                                    VIEW2D(3X)