xgraph
use the xgraph(1) program for plotting.
General form
xgraph file [exprs] [plot options]
Note: xgraph doesn't work on Windows. It runs the external X11 program xgraph, which isn't available there. Use plot instead.
The Spice3f5 xgraph command plots data like the plot command but via xgraph, a popular X11 plotting program.
If file is either "temp" or "tmp" a temporary file is used to hold the data while being plotted. For available plot options, see the plot command. All options except for polar or smith plots are supported.