NAME
graph - draw a graph
SYNOPSIS
graph [ option ] ... | plotter
DESCRIPTION
Graph with no options takes pairs of numbers from the stan-
dard input as abscissas and ordinates of a graph. The graph
is written on the standard output to be piped to the plotter
program for a particular device; see plot (VI). These plot-
ters exist: gsip, for the GSI and other Diablo terminals;
tek, for the Tektronix 4014 terminal; and vt0 for the on-
line storage scope.
The following options are recognized, each as a separate
argument.
a Supply abscissas automatically (they are missing from
the input); spacing is given by the next argument, or
is assumed to be 1 if next argument is not a number. A
second optional argument is the starting point for the
automatic abscissa.
c Place character string given by next argument at each
point.
d Omit connections between points. (Disconnect.)
gn Grid style:
n=0, no grid
n=1, axes only
n=2, complete grid (default).
s Save screen, don't erase before plotting.
x Next 1 (or 2) arguments are lower (and upper) x limits.
y Next 1 (or 2) arguments are lower (and upper) y limits.
h Next argument is fraction of space for height
w Next argument is fraction of space for width.
r Next argument is fraction of space to move right before
plotting.
u Next argument is fraction of space to move up before
plotting.
Points are connected by straight line segments in the order
they appear in input. If a specified lower limit exceeds
the upper limit, or if the automatic increment is negative,
1
the graph is plotted upside down. Automatic abscissas begin
with the lower x limit, or with 0 if no limit is specified.
Grid lines and automatically determined limits fall on round
values, however roundness may be subverted by giving an
inappropriately rounded lower limit. Plotting symbols spec-
ified by c are placed so that a small initial letter, such
as + o x, will fall approximately on the plotting point.
SEE ALSO
spline (VI), plot (VI)
BUGS
A limit of 1000 points is enforced silently.
2