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1.1 ! root 1: .th PLOT I 6/4/73 ! 2: .sh NAME ! 3: plot \*- make a graph ! 4: .sh SYNOPSIS ! 5: .bd plot ! 6: [ option ] ... ! 7: .sh DESCRIPTION ! 8: .it Plot ! 9: takes pairs of numbers from the ! 10: standard input as abscissas and ! 11: ordinates of a graph. ! 12: The graph is plotted on the storage scope, /dev/vt0. ! 13: .s3 ! 14: The following options are recognized, ! 15: each as a separate argument. ! 16: .s3 ! 17: .lp +5 5 ! 18: \fBa\fR Supply abscissas automatically (they are missing from ! 19: the input); spacing is given by the next ! 20: argument, or is assumed to be 1 if next argument is not a number. ! 21: .s3 ! 22: .lp +5 5 ! 23: \fBc\fR Place character string given by next argument ! 24: at each point. ! 25: .s3 ! 26: .lp +5 5 ! 27: \fBd\fR Omit connections between points. (Disconnect.) ! 28: .s3 ! 29: .lp +5 5 ! 30: \fBg\fIn\fR Grid ! 31: style: ! 32: .lp +5 0 ! 33: \fIn\fR=0, no grid ! 34: .lp +5 0 ! 35: \fIn\fR=1, axes only ! 36: .lp +5 0 ! 37: \fIn\fR=2, complete grid (default). ! 38: .s3 ! 39: .lp +5 5 ! 40: \fBs\fR Save screen, don't erase before plotting. ! 41: .s3 ! 42: .lp +5 5 ! 43: \fBx\fR Next 1 (or 2) arguments are lower (and upper) \fIx\fR limits. ! 44: .s3 ! 45: .lp +5 5 ! 46: \fBy\fR Next 1 (or 2) arguments are lower (and upper) ! 47: \fIy\fR limits. ! 48: .s3 ! 49: .i0 ! 50: Points are connected by straight line segments in the order ! 51: they appear in input. ! 52: If a specified lower limit exceeds the upper limit, or if ! 53: the automatic increment is negative, the graph is plotted ! 54: upside down. ! 55: Automatic abscissas begin with the lower \fIx\fR limit, or with 0 ! 56: if no limit is specified. ! 57: Grid lines and automatically determined limits fall on round ! 58: values, however roundness ! 59: may be subverted by giving an inappropriately rounded ! 60: lower limit. ! 61: Plotting symbols specified by ! 62: .bd c ! 63: are ! 64: placed so that a small initial letter, ! 65: such as + o x, will fall ! 66: approximately on the plotting point. ! 67: .sh FILES ! 68: /dev/vt0 ! 69: .sh "SEE ALSO" ! 70: spline(VI) ! 71: .sh BUGS ! 72: A limit of 1000 points is enforced silently.
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