plot(3)

NAME

plot, arc, box, circle, closepl, closevt, cont, erase, label, line, linmod, move, openpl, openvt, point, space − graphics interface

SYNOPSIS

void arc(short x0, short y0, short x1 , short y1, short x2, short y2 );

void box(short x0, short y0, short x1 , short y1);

void circle(short x, short y , short r);

void closepl();

void closevt();

void cont(short x, short y);

void erase();

void label(char ∗s);

void line(short x0, short y0, short x1 , short y1);

void linmod(char ∗s);

void move(short x, short y);

void openpl();

void openvt();

void point(short x, short y);

void space(short x0, short y0, short x1 , short y1);

DESCRIPTION

These routines generate graphics output for a set of output devices. The format of the output is dependent upon which link editor option is used when the program is compiled and linked (see Link Editor).

The term "current point" refers to the current setting for the x and y coordinates.

arc() specifies a circular arc. The coordinates (x0, y0) specify the center of the arc. The coordinates (x1, y1) specify the starting point of the arc. The coordinates (x2, y2) specify the end point of the circular arc.

box() specifies a rectangle with coordinates (x0, y0), (x0, y1), (x1, y0), and (x1, y1). The current point is set to (x1, y1).

circle() specifies a circle with a center at the coordinates (x, y) and a radius of r.

closevt() and closepl() flush the output.

cont() specifies a line beginning at the current point and ending at the coordinates (x, y). The current point is set to (x, y).

erase() starts another frame of output.

label() places the null terminated string s so that the first character falls on the current point. The string is then terminated by a NEWLINE character.

line() draws a line starting at the coordinates (x0, y0) and ending at the coordinates (x1, y1). The current point is set to (x1, y1).

linmod() specifies the style for drawing future lines. s may contain one of the following: dotted, solid, longdashed, shortdashed, or dotdashed.

move() sets the current point to the coordinates (x, y).

openpl() or openvt() must be called to open the device before any other plot routines are called.

point() plots the point given by the coordinates (x, y). The current point is set to (x, y).

space() specifies the size of the plotting area. The plot will be reduced or enlarged as necessary to fit the area specified. The coordinates (x0, y0) specify the lower left hand corner of the plotting area. The coordinates (x1, y1) specify the upper right hand corner of the plotting area.

Link Editor

Various flavors of these routines exist for different output devices. They are obtained by using the following ld(1) options:

-lplot device-independent graphics stream on standard output in the format described in plot(4B)

-l300 GSI 300 terminal

-l300s GSI 300S terminal

-l4014 Tektronix 4014 terminal

-l450 GSI 450 terminal

-lvt0

FILES

/usr/lib/libplot.a

/usr/lib/lib300.a

/usr/lib/lib300s.a

/usr/lib/lib4014.a

/usr/lib/lib450.a

/usr/lib/libvt0.a

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
MT-Level	Safe

Museum

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