plot(FP)
plot --
graphics interface
Description
Files of this format are produced by routines described in
plot(S)
and are interpreted for various devices by commands described in
tplot(ADM).
A graphics file is a stream of plotting instructions.
Each instruction consists of an ASCII letter
usually followed by bytes of binary information.
The instructions are executed in order.
A point is designated by four bytes representing the x and
y
values; each value is a signed integer.
The last designated point in an l, m, n, or p
instruction becomes the ``current point'' for the next instruction.
Each of the following descriptions begins with the name
of the corresponding routine in
plot(S).
m-
move: The next four bytes generate a new current point.
n-
cont: Draw a line from the current point to
the point given by the next four bytes
(see
tplot(ADM)).
p-
point: Plot the point given by the next four bytes.
l-
line: Draw a line from the point given by the next
four bytes to the point given by the following four bytes.
t-
label: Place the following ASCII string so that its
first character falls on the current point.
The string is terminated by a newline character.
e-
erase: Start another frame of output.
f-
linemod: Take the following string, up to a new line,
as the style for drawing further lines.
The styles are dotted,
solid, longdashed, shortdashed, and
dotdashed.
Effective only for the -T4014 and -Tver options of
tplot(ADM)
(TEKTRONIX 4014 terminal and VERSATEC plotter).
s-
space: The next four bytes give the lower left corner of the plotting area;
the following four give the upper right corner.
The plot is magnified or reduced to fit the device as closely as possible.
Space settings that exactly fill the plotting area
with unit-y scaling are shown for devices supported by the filters of
tplot(ADM).
The upper limit is just outside the plotting area.
In every case the plotting area is taken to be square;
points outside may be displayable on devices whose face is not square.
DASI 300-
space(0, 0, 4096, 4096);
DASI 300s-
space(0, 0, 4096, 4096);
DASI 450-
space(0, 0, 4096, 4096);
TEKTRONIX 4014-
space(0, 0, 3120, 3120);
VERSATEC plotter-
space(0, 0, 2048, 2048);
Note
The plotting library
plot(S)
and the curses library
curses(S)
both use the names erase and move. The
curses versions are macros.
If you need both libraries, put the
plot(S)
code in a different source file than the
curses(S)
code, and/or undefine (using #undef move and
erase in the
plot(S)
code.
See also
graph(ADM),
plot(S),
term(M),
tplot(ADM)
© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003