Python ASCII plot.ipynb

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 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Python builtin \"plotting\" 🐍📈🔨😋\n",
    "```\n",
    "     x   f(x)\n",
    " -2.00   0.20 \n",
    " -1.64   0.27 ######\n",
    " -1.27   0.38 ##############\n",
    " -0.91   0.55 ###########################\n",
    " -0.55   0.77 #############################################\n",
    " -0.18   0.97 ############################################################\n",
    "  0.18   0.97 ############################################################\n",
    "  0.55   0.77 #############################################\n",
    "  0.91   0.55 ###########################\n",
    "  1.27   0.38 ##############\n",
    "  1.64   0.27 ######\n",
    "  2.00   0.20 \n",
    "```"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "def plot(f, left, right, nsteps=20, width=30):\n",
    "    T = range(nsteps)\n",
    "    X = [left + t * (right-left) / (nsteps-1) for t in T]\n",
    "    Y = [f(x) for x in X]\n",
    "    miny, maxy = min(Y), max(Y)\n",
    "    print('%6s %6s' % ('x', 'f(x)'))\n",
    "    for x, y in zip(X, Y):\n",
    "        y_ = int(.5 + width * (y - miny) / (maxy - miny))\n",
    "        bar = '#' * y_\n",
    "        print('%6.2f %6.2f %s' % ( x, y, bar))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "def f(x):\n",
    "    return 1 / (1 + x*x)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "     x   f(x)\n",
      " -2.00   0.20 \n",
      " -1.79   0.24 #\n",
      " -1.58   0.29 ###\n",
      " -1.37   0.35 ######\n",
      " -1.16   0.43 #########\n",
      " -0.95   0.53 ############\n",
      " -0.74   0.65 #################\n",
      " -0.53   0.78 ######################\n",
      " -0.32   0.91 ###########################\n",
      " -0.11   0.99 ##############################\n",
      "  0.11   0.99 ##############################\n",
      "  0.32   0.91 ###########################\n",
      "  0.53   0.78 ######################\n",
      "  0.74   0.65 #################\n",
      "  0.95   0.53 ############\n",
      "  1.16   0.43 #########\n",
      "  1.37   0.35 ######\n",
      "  1.58   0.29 ###\n",
      "  1.79   0.24 #\n",
      "  2.00   0.20 \n"
     ]
    }
   ],
   "source": [
    "plot(f, -2, 2)"
   ]
  }
 ],
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   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
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    "name": "ipython",
    "version": 3
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   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.5.2"
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