cplot

Building

git clone https://github.com/giorgianb/cplot
cd cplot
make

Using

If neither --expression or --file are specified, cplot will read and plot points from standard input. Points are expected in the format x y, with any amount of whitespace in between x and y. Expressions are functions of x. Several basic functions are also available for use in expressions, namely sin, cos, tan, arcsin, arccos, and ln.

cplot is highly configurable. The number of ticks an each axis can be specified using --x-ticks and --y-ticks. The ranges can be specified using --x-min, --x-max, --y-min, and --y-max. The colors of the axes, x-tick labels, y-tick labels, and marks can also be configured through command line options. For the full summary of the available command-line options, see ./cplot --help.

Examples

Plotting sin(x):
./cplot --expression "sin(x)" --x-min=-6.28 --x-max=6.28 --y-min=-1 --y-max=1

Plotting parabolic functions:
./cplot --expression "x^2 + 2*x + 1"

Plotting points from a file:
./cplot --file my-data.dat --x-min=-1000 --x-max=1000 --y-min=-40 --y-max=40 --rows=70

Plotting points from another program:
point_generator | ./cplot

Help

--file, --file=				read and plot points from a file.
--expression, --expression=		generate points from given expression.
--x-min, --x-min=			specify minimum x-value.
--x-max, --x-max=			specify maximum x-value.
--y-min, --y-min=			specify minimum y-value.
--y-max, --y-max=			specify maximum y-value
--x-ticks, --x-ticks=			specify number of x-axis ticks.
--y-ticks, --y-ticks=			specify number of y-axis ticks.
--x-number-color, --x-number-color=	specify color used to print tick labels on x-axis.
--y-number-color, --y-number-color=	specify color used to print tick labels on y-axis.
--axes-color, --axes-color=		specify color used to print axes.
--mark-color, --mark-color=		specify color used to print marks on plot.
--rows, --rows=				specify number of rows y-axis uses.
--columns, --columns=			specify number of columns x-axis uses.
--x-number-width, --x-number-width=	specify width of tick labels on x-axis.
--y-number-width, --y-number-width=	specify width of tick labels on y-axis.
--x-precision, --x-precision=		specify number of decimal points to use when printing x-axis tick labels.
--y-precision, --y-precision=		specify number of decimal points to use when printing y-axis tick labels.
--mark-char, --mark-char=		specify marker character to use on plot.
--help					print this message.


The following colors may be passed to arguments requiring colors:
black red green orange blue purple cyan light-gray dark-gray light-red light-green yellow light-blue light-purple light-cyan white no-color

By default, if neither --file or --expression is specified, points are read from standard input.