NaivePlot is a (yet another) library for making simple plotting in the terminal. Implemented in python it is perfect to visualize simple data, and pretty complex stuff too - but in an ascii-kinda-way.
$ python
Python 2.7.3 (default, Sep 26 2013, 20:08:41) [GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from math import sin, cos, pi
>>> from naiveplot import Func, ParaFunc, Curve, NaivePlot
>>> >>> pf1 = ParaFunc(lambda t: 16*(sin(t)**3), ... lambda t: 13*cos(t) - 5*cos(2*t) - 2*cos(3*t) - cos(4*t))
>>> c1 = Curve(pf1, -pi, pi, 0.001)
>>> >>> pf2 = Func(lambda s: s - 8*cos(0.1*s) ** 3 + 0.003*s**2)
>>> c2 = Curve(pf2, -18, 18, 0.01)
>>> >>> heart = NaivePlot()
>>> heart.add_curve(c1, 'o')
>>> heart.add_curve(c2, 'x')
>>> heart.fit_curve(c2) >>> print heart
NaivePlot, 79x23
| x
| xxxx | xxxx | xxxx | xxxx oooooooooooooooooo | ooooooooooooooooxxx oooooo ooooo X ooooo xxxxoooooo ooo oooo 8oooo xxx ooo ooo oo7o xxx ooo o o5 xx o o 4 xxx o oo 2 xxx oo -----------------X---8-7--6-5-4-3-2-1-d+-1-2-3-4-5--6-7-8---X----------------- ooo 2 xxx ooo oooo 3 xxx oooo ooooo 5 xxx ooooo ooooo 7xxxx ooooo ooooo xx8x ooooo oxxxxxxxxxxxxx X ooooo xxxxxxxxxxxxxx ooooo | ooooo xxxxx oooo | oooo xxxxx ooo |ooo xxxxx oo|o >>>