plots/scatter.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# <img style='float: left' src=\"http://lightning-viz.org/images/logo.png\"> <br> <br> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Scatter plots in <a href='http://lightning-viz.org/'><font color='#9175f0'>Lightning</font></a>"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## <hr> Setup"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "from lightning import Lightning\n",
    "\n",
    "from numpy import random, asarray, sqrt, arctan2, pi, clip\n",
    "from seaborn import color_palette\n",
    "from sklearn import datasets\n",
    "from colorsys import hsv_to_rgb"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Connect to server"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<div style='margin-top:8px'><img src='data:image/png;base64,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' width='30px' height='35px' style='display: inline-block; padding-right: 10px'></img><span>Lightning initialized</span></div>"
      ],
      "text/plain": [
       "<IPython.core.display.HTML object>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    },
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Connected to server at http://public.lightning-viz.org\n"
     ]
    },
    {
     "data": {
      "application/javascript": [
       "(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require==\"function\"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error(\"Cannot find module '\"+o+\"'\")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require==\"function\"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){\n",
       "window.lightning = window.lightning || {};\n",
       "var lightningCommMap = {};\n",
       "\n",
       "var readCommData = function(commData, field) {\n",
       "    try {\n",
       "        return commData.content.data[field];\n",
       "    } catch (err) {\n",
       "        return;\n",
       "    }\n",
       "};\n",
       "\n",
       "\n",
       "var init_comm = function() {\n",
       "    IPython.notebook.kernel.comm_manager.register_target('lightning', function(comm, data) {\n",
       "        var id = readCommData(data, 'id');\n",
       "        lightningCommMap[id] = comm;\n",
       "    });\n",
       "\n",
       "    window.lightning.comm_map = lightningCommMap;\n",
       "}\n",
       "\n",
       "\n",
       "if(IPython && IPython.notebook) {\n",
       "\n",
       "    if(IPython.notebook.kernel) {\n",
       "        init_comm();\n",
       "    }\n",
       "\n",
       "    IPython.notebook.events.on('kernel_connected.Kernel', init_comm);\n",
       "\n",
       "}\n",
       "\n",
       "\n",
       "},{}]},{},[1])\n",
       "//# sourceMappingURL=data:application/json;base64,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\n"
      ],
      "text/plain": [
       "<IPython.core.display.Javascript object>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "lgn = Lightning(ipython=True, host='http://public.lightning-viz.org')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## <hr> Random points with default styling"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/html": [
       "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1, maximum-scale=1\"/><meta http-equiv=\"X-UA-Compatible\" content=\"IE=10; IE=9; IE=8; IE=7; IE=EDGE\"/><meta charset=\"UTF-8\"/><link href=\"//fonts.googleapis.com/css?family=Open+Sans:400,700\" rel=\"stylesheet\" type=\"text/css\"/><link rel=\"stylesheet\" href=\"http://public.lightning-viz.org/css/app.css\"/><link rel=\"stylesheet\" href=\"http://public.lightning-viz.org/css/dynamic/viz/?visualizations[]=scatter\"/><div id=\"lightning-body\" class=\"container content wrap push\"><div class=\"feed-container\"><div data-model=\"visualization\" data-model-id=\"f73253e3-5dd8-4da9-b317-d5a2f82d52e6\" class=\"feed-item-container\"><div data-type=\"lightning-scatter\" 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data-images=\"null\" data-options=\"{&quot;tooltips&quot;:true,&quot;description&quot;:null,&quot;zoom&quot;:true,&quot;height&quot;:null,&quot;width&quot;:600,&quot;brush&quot;:true}\" id=\"viz-f73253e3-5dd8-4da9-b317-d5a2f82d52e6\" data-initialized=\"false\" class=\"feed-item\"></div></div></div></div><script>window.lightning = window.lightning || {};\n",
       "window.lightning.host = \"http://public.lightning-viz.org/\" || 'http://127.0.0.1:3000/';\n",
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       "window._require = window.require;\n",
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       "window._define = window.define;\n",
       "window.define = undefined;</script><script src=\"http://public.lightning-viz.org/js/embed.js\"></script>"
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       "<lightning.types.plots.Scatter at 0x1092bf090>"
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     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "n = 100\n",
    "x = random.randn(n)\n",
    "y = random.randn(n)\n",
    "lgn.scatter(x, y)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## <hr> Random big purple points"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Style options like `color` and `size` can be passed a single value, which affects all points"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
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       "<meta name=\"viewport\" content=\"width=device-width, initial-scale=1, maximum-scale=1\"/><meta http-equiv=\"X-UA-Compatible\" content=\"IE=10; IE=9; IE=8; IE=7; IE=EDGE\"/><meta charset=\"UTF-8\"/><link href=\"//fonts.googleapis.com/css?family=Open+Sans:400,700\" rel=\"stylesheet\" type=\"text/css\"/><link rel=\"stylesheet\" href=\"http://public.lightning-viz.org/css/app.css\"/><link rel=\"stylesheet\" href=\"http://public.lightning-viz.org/css/dynamic/viz/?visualizations[]=scatter\"/><div id=\"lightning-body\" class=\"container content wrap push\"><div class=\"feed-container\"><div data-model=\"visualization\" data-model-id=\"0370a776-29fb-4c70-9ab7-b99e58c7aa83\" class=\"feed-item-container\"><div data-type=\"lightning-scatter\" 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data-images=\"null\" data-options=\"{&quot;tooltips&quot;:true,&quot;description&quot;:null,&quot;zoom&quot;:true,&quot;height&quot;:null,&quot;width&quot;:600,&quot;brush&quot;:true}\" id=\"viz-0370a776-29fb-4c70-9ab7-b99e58c7aa83\" data-initialized=\"false\" class=\"feed-item\"></div></div></div></div><script>window.lightning = window.lightning || {};\n",
       "window.lightning.host = \"http://public.lightning-viz.org/\" || 'http://127.0.0.1:3000/';\n",
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       "if(window.lightning.requiredVizTypes.indexOf(\"scatter\") === -1) {\n",
       "    window.lightning.requiredVizTypes.push(\"scatter\");\n",
       "}\n",
       "window._require = window.require;\n",
       "window.require = undefined;\n",
       "window._define = window.define;\n",
       "window.define = undefined;</script><script src=\"http://public.lightning-viz.org/js/embed.js\"></script>"
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       "<lightning.types.plots.Scatter at 0x109506950>"
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     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "n = 100\n",
    "x = random.randn(n)\n",
    "y = random.randn(n)\n",
    "c = [145,117,240]\n",
    "s = 18\n",
    "lgn.scatter(x, y, color=c, size=s)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## <hr> Random points with all styling options"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Style options can also be passed as lists with one value per point, either scalars (for `alpha` and `size`) or arrays (for `color`). \n",
    "<br>\n",
    "In this example we also use seaborn's excellent `color_palette` tool to select our colors."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
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data-images=\"null\" data-options=\"{&quot;tooltips&quot;:true,&quot;description&quot;:null,&quot;zoom&quot;:true,&quot;height&quot;:null,&quot;width&quot;:600,&quot;brush&quot;:true}\" id=\"viz-480684c7-acd7-4240-a5e5-faf916205618\" data-initialized=\"false\" class=\"feed-item\"></div></div></div></div><script>window.lightning = window.lightning || {};\n",
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       "    window.lightning.requiredVizTypes.push(\"scatter\");\n",
       "}\n",
       "window._require = window.require;\n",
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       "window.define = undefined;</script><script src=\"http://public.lightning-viz.org/js/embed.js\"></script>"
      ],
      "text/plain": [
       "<lightning.types.plots.Scatter at 0x10951e750>"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "n = 100\n",
    "x = random.randn(n)\n",
    "y = random.randn(n)\n",
    "c = [asarray(color_palette('Blues', 100)[random.choice(range(100))])*255 for i in range(n)]\n",
    "a = random.rand(n)\n",
    "s = random.rand(n)*15+8\n",
    "lgn.scatter(x, y, color=c, alpha=a, size=s)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## <hr> Clustered points with group labels"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Instead of specifying colors directly as rgb, you can specify labels (or group assignments).\n",
    "<br>\n",
    "Here we use `scikitlearn` to generate clusters and then color according to cluster label."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
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data-images=\"null\" data-options=\"{&quot;tooltips&quot;:true,&quot;description&quot;:null,&quot;zoom&quot;:true,&quot;height&quot;:null,&quot;width&quot;:600,&quot;brush&quot;:true}\" id=\"viz-53e660db-24fa-48be-b1da-913765634d68\" data-initialized=\"false\" class=\"feed-item\"></div></div></div></div><script>window.lightning = window.lightning || {};\n",
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       "if(window.lightning.requiredVizTypes.indexOf(\"scatter\") === -1) {\n",
       "    window.lightning.requiredVizTypes.push(\"scatter\");\n",
       "}\n",
       "window._require = window.require;\n",
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       "window._define = window.define;\n",
       "window.define = undefined;</script><script src=\"http://public.lightning-viz.org/js/embed.js\"></script>"
      ],
      "text/plain": [
       "<lightning.types.plots.Scatter at 0x10926b510>"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "d, g = datasets.make_blobs(n_features=2, n_samples=200, centers=5, cluster_std=2.0, random_state=100)\n",
    "x = d[:, 0]\n",
    "y = d[:, 1]\n",
    "lgn.scatter(x, y, group=g, alpha=0.8, size=12)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## <hr> Color by value"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "We can color points by a numerical value by passing that value, and a Colorbrewer colormap."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
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data-images=\"null\" data-options=\"{&quot;tooltips&quot;:true,&quot;description&quot;:null,&quot;zoom&quot;:true,&quot;height&quot;:null,&quot;width&quot;:600,&quot;brush&quot;:true}\" id=\"viz-b02b64eb-27bf-4d3e-98b7-becc52ef751a\" data-initialized=\"false\" class=\"feed-item\"></div></div></div></div><script>window.lightning = window.lightning || {};\n",
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       "if(window.lightning.requiredVizTypes.indexOf(\"scatter\") === -1) {\n",
       "    window.lightning.requiredVizTypes.push(\"scatter\");\n",
       "}\n",
       "window._require = window.require;\n",
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       "window.define = undefined;</script><script src=\"http://public.lightning-viz.org/js/embed.js\"></script>"
      ],
      "text/plain": [
       "<lightning.types.plots.Scatter at 0x1092bf590>"
      ]
     },
     "execution_count": 7,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "n = 200\n",
    "x = random.randn(n)\n",
    "y = random.randn(n)\n",
    "v = random.rand(n)\n",
    "lgn.scatter(x, y, values=v, alpha=0.6, colormap='YlOrRd')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## <hr> Fun with colors"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "We can use geometry to set colors based on point position and get a pretty result."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
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       "window.lightning.vizCount = (window.lightning.vizCount + 1) || 1;\n",
       "window.lightning.requiredVizTypes = window.lightning.requiredVizTypes || [];\n",
       "if(window.lightning.requiredVizTypes.indexOf(\"scatter\") === -1) {\n",
       "    window.lightning.requiredVizTypes.push(\"scatter\");\n",
       "}\n",
       "window._require = window.require;\n",
       "window.require = undefined;\n",
       "window._define = window.define;\n",
       "window.define = undefined;</script><script src=\"http://public.lightning-viz.org/js/embed.js\"></script>"
      ],
      "text/plain": [
       "<lightning.types.plots.Scatter at 0x10953a250>"
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "n = 200\n",
    "x = random.randn(n)\n",
    "y = random.randn(n)\n",
    "r = map(lambda (x, y): sqrt(x ** 2 + y ** 2), zip(x,y))\n",
    "t = map(lambda (x, y): arctan2(x, y), zip(x,y))\n",
    "c = map(lambda (r, t): asarray(hsv_to_rgb(t / (2 * pi), r, 0.9))*255, zip(r, t))\n",
    "s = asarray(r) * 10 + 2\n",
    "lgn.scatter(x, y, color=c, size=s, alpha=0.6)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Axis labels"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "We can add axis labels by providing extra arguments"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
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axis label 1&quot;],&quot;yaxis&quot;:[&quot;my axis label 2&quot;]}\" data-images=\"null\" data-options=\"{&quot;tooltips&quot;:true,&quot;description&quot;:null,&quot;zoom&quot;:true,&quot;height&quot;:null,&quot;width&quot;:600,&quot;brush&quot;:true}\" id=\"viz-3c8c20ee-9c8b-4361-9792-872c4a4e5c83\" data-initialized=\"false\" class=\"feed-item\"></div></div></div></div><script>window.lightning = window.lightning || {};\n",
       "window.lightning.host = \"http://public.lightning-viz.org/\" || 'http://127.0.0.1:3000/';\n",
       "window.lightning.vizCount = (window.lightning.vizCount + 1) || 1;\n",
       "window.lightning.requiredVizTypes = window.lightning.requiredVizTypes || [];\n",
       "if(window.lightning.requiredVizTypes.indexOf(\"scatter\") === -1) {\n",
       "    window.lightning.requiredVizTypes.push(\"scatter\");\n",
       "}\n",
       "window._require = window.require;\n",
       "window.require = undefined;\n",
       "window._define = window.define;\n",
       "window.define = undefined;</script><script src=\"http://public.lightning-viz.org/js/embed.js\"></script>"
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      "text/plain": [
       "<lightning.types.plots.Scatter at 0x109506f90>"
      ]
     },
     "execution_count": 9,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "x = random.randn(100)\n",
    "y = random.randn(100)\n",
    "\n",
    "lgn.scatter(x, y, xaxis='my axis label 1', yaxis='my axis label 2')"
   ]
  }
 ],
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