term% cat index.txt VIEW2D(1) General Commands Manual VIEW2D(1)
NAME
view2d - movie of a function f(x, y, t)
SYNOPSIS
view2d [ option ... ] file
regrid [ option ... ] file
vdata [ option ... ] file
DESCRIPTION
View2d displays a sequence of functional surfaces on a 5620 or color
display. On the 5620, the surface is ruled with a square mesh and pro‐
jected isometrically; on a color display, the surface is viewed from
above, with height indicated by color. The options are:
-T5 output on the 5620; -T5 is the default when TERM (see environ(7))
is 5620.
-Tc output on color display; -Tc is the default when TERM is not
5620.
-Tp produces input for plot(1) to produce contour plots.
-cn use n colors (n=32 by default) or contours (6 by default).
-ps run movie for s seconds (s=5 by default).
There are two supported ways to generate input for view2d. Vdata takes
ASCII input and allows scattered data; view2d(3) can be called from a
program that already has data on a grid.
Regrid changes the grid sizes in view2d binary files, with options:
-b adds a bar at the bottom of the image indicating time.
-nNX[,NY] output grid is NX by NY.
-fNF output will have NF frames.
-r the plane of closest fit to the first frame is subtracted
from all the frames.
-mfmin,fmax
clips the data to the range fmin,fmax.
One option applies to both view2d and regrid:
-tTS[,TE]
displays frames from TS (default first frame time) to TE (de‐
fault last frame time).
Vdata takes input in the following format and converts to input for
view2d. The first line of each frame has the number of data points in
the frame (an integer) and the time (a floating point value). The rest
of the lines in the frame consist of x y z triples. The order of
points is irrelevant. Every (floating point or integer) number must be
white space separated. The options are:
-nNX[,NY]
output grid is NX by NY.
-c use piecewise constant rather than linear interpolation.
-s scatterplot the data on a black background.
-i the data is already on a square grid, in the order x and y as‐
cending with x varying fastest.
SEE ALSO
view2d(3), view2d(5)
Exotic options for photography, color maps, and halftone are described
in /usr/lib/view2d/howto.
VIEW2D(1)