term% cat index.txt FPLOT(1) General Commands Manual FPLOT(1)
NAME
fplot - plot elementary function
SYNOPSYS
fplot [ -c [ -s size ]] [ -r range ] functions ...
DESCRIPTION
Fplot plots elementary functions separated by spaces. The default out‐
put is the screen, but if the -c option is specified, the plot is writ‐
ten to the standard output as an r8g8b8 image(6). The latter image
size is either 640x480 or the one specified by the -s option's argument
(in the WIDTHxHEIGHT format). The -r option accepts as argument the x
and y ranges, in the format
Each function to be plotted may be a combination of the independent
variable x, the elementary operations (+, -, *, / and %), and the func‐
tions described in sin(2) and exp(2). The exception being that x^n
raises x to the nth power, log is the base 10 logarithm, and ln is the
natural logarithm.
EXAMPLES
Plot the absolute value and x^3 functions to a 400x400 image(6) on
standard output and view with page(1).
fplot -c -s 400x400 'sqrt(x*x)' 'x^3' | page
SOURCE
/sys/src/cmd/fplot.c
SEE ALSO
exp(2), sin(2), image(6), plot(1).
DIAGNOSTICS
Fplot either exits with or an empty status.
HISTORY
Fplot first appeared in 9front (July, 2011).
FPLOT(1)