GRAPH(1) General Commands Manual GRAPH(1)
NAME
graph - draw a graph
SYNOPSIS
graph [ option ... ]
DESCRIPTION
Graph with no options takes pairs of numbers from the standard input as abscissas (x-values) and ordinates (y-values) of a graph. Succes-
sive points are connected by straight lines. The graph is encoded on the standard output for display by plot(1) filters.
If an ordinate is followed by a nonnumeric string, that string is printed as a label beginning on the point. Labels may be surrounded with
quotes " " in which case they may be empty or contain blanks and numbers; labels never contain newlines.
The following options are recognized, each as a separate argument.
-a Supply abscissas automatically; no x-values appear in the input. Spacing is given by the next argument (default 1). A second
optional argument is the starting point for automatic abscissas (default 0, or 1 with a log scale in x, or the lower limit given by
-x).
-b Break (disconnect) the graph after each label in the input.
-c Character string given by next argument is default label for each point.
-g Next argument is grid style, 0 no grid, 1 frame with ticks, 2 full grid (default).
-l Next argument is a legend to title the graph. Grid ranges are automatically printed as part of the title unless a -s option is
present.
-m Next argument is mode (style) of connecting lines: 0 disconnected, 1 connected. Some devices give distinguishable line styles for
other small integers. Mode -1 (default) begins with style 1 and rotates styles for successive curves under option -o.
-o (Overlay.) The ordinates for n superposed curves appear in the input with each abscissa value. The next argument is n.
-s Save screen; no new page for this graph.
-x l If l is present, x-axis is logarithmic. Next 1 (or 2) arguments are lower (and upper) x limits. Third argument, if present, is
grid spacing on x axis. Normally these quantities are determined automatically.
-y l Similarly for y.
-e Make automatically determined x and y scales equal.
-h Next argument is fraction of space for height.
-w Similarly for width.
-r Next argument is fraction of space to move right before plotting.
-u Similarly to move up before plotting.
-t Transpose horizontal and vertical axes. (Option -a now applies to the vertical axis.)
If a specified lower limit exceeds the upper limit, the axis is reversed.
SOURCE
/sys/src/cmd/graph
SEE ALSO
plot(1), grap(1)
BUGS
Segments that run out of bounds are dropped, not windowed. Logarithmic axes may not be reversed. Option -e actually makes automatic lim-
its, rather than automatic scaling, equal.
GRAPH(1)