VIEW2D(5) VIEW2D(5)
NAME
view2d - movie of a function f(x, y, t)
DESCRIPTION
Files of this format are produced by functions in view2d(3),
and displayed by commands in view2d(1). A movie file con-
sists of one or more frames, each consisting of a header and
a sequence of 16-bit signed integer values for each pixel,
scanned left to right and bottom to top. (Left-to-right is
the inner loop.)
The header consists of the 32-bit magic number 0135246, then
eight 16-bit integers:
VER The version number.
NX, NY
The number of pixels in the frame. These may not vary
from frame to frame.
u, v relate pixel values p in the file to user function val-
ues f by
p = u + f/2**v.
FIXUV
normally 0; 1 if u, v, PMIN, PMAX of first frame give
a bound on the data in the entire file.
PMIN, PMAX
limits of the data; only used when FIXUV=1.
and finally a 16-byte ASCII representation of a floating
point value:
TIME is a frame index, typically set to simulated time or to
an iteration counter. This need not be uniformly
spaced from frame to frame, but should be nondecreas-
ing.
The range of displayable pixel values is [-32765,32765].
Values below this range are deemed out of bounds and not
plotted; values above are reserved.
SEE ALSO
view2d(1), view2d(3)