visualizations/vega-altair/vega-altair-interactive-pie-chart.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "5d18a4d3-31c1-4991-9bc5-d1b59821579b",
   "metadata": {},
   "outputs": [],
   "source": [
    "# import packages \n",
    "import altair as alt \n",
    "import mercury as mr \n",
    "import pandas as pd "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "dd720ca9-c05f-4ef2-999e-210a69c7f668",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "application/mercury+json": "{\n    \"widget\": \"Slider\",\n    \"value\": 0,\n    \"min\": 0,\n    \"max\": 100,\n    \"step\": 10,\n    \"label\": \"How big the hole should be?\",\n    \"model_id\": \"00cf713b8fdf465cb20ad7aeca5e4028\",\n    \"code_uid\": \"Slider.0.40.36.2-rand54b1fa98\",\n    \"url_key\": \"\",\n    \"disabled\": false,\n    \"hidden\": false\n}",
      "application/vnd.jupyter.widget-view+json": {
       "model_id": "00cf713b8fdf465cb20ad7aeca5e4028",
       "version_major": 2,
       "version_minor": 0
      },
      "text/plain": [
       "mercury.Slider"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "# mercury widget \n",
    "slider = mr.Slider(value=0, min=0, max=100, step=10, label=\"How big the hole should be?\")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "f1b54152-92ae-4ea2-9b4b-00f8052fd958",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/html": [
       "\n",
       "<style>\n",
       "  #altair-viz-f747c94886274c3298fb644c78e316ea.vega-embed {\n",
       "    width: 100%;\n",
       "    display: flex;\n",
       "  }\n",
       "\n",
       "  #altair-viz-f747c94886274c3298fb644c78e316ea.vega-embed details,\n",
       "  #altair-viz-f747c94886274c3298fb644c78e316ea.vega-embed details summary {\n",
       "    position: relative;\n",
       "  }\n",
       "</style>\n",
       "<div id=\"altair-viz-f747c94886274c3298fb644c78e316ea\"></div>\n",
       "<script type=\"text/javascript\">\n",
       "  var VEGA_DEBUG = (typeof VEGA_DEBUG == \"undefined\") ? {} : VEGA_DEBUG;\n",
       "  (function(spec, embedOpt){\n",
       "    let outputDiv = document.currentScript.previousElementSibling;\n",
       "    if (outputDiv.id !== \"altair-viz-f747c94886274c3298fb644c78e316ea\") {\n",
       "      outputDiv = document.getElementById(\"altair-viz-f747c94886274c3298fb644c78e316ea\");\n",
       "    }\n",
       "    const paths = {\n",
       "      \"vega\": \"https://cdn.jsdelivr.net/npm/vega@5?noext\",\n",
       "      \"vega-lib\": \"https://cdn.jsdelivr.net/npm/vega-lib?noext\",\n",
       "      \"vega-lite\": \"https://cdn.jsdelivr.net/npm/vega-lite@5.16.3?noext\",\n",
       "      \"vega-embed\": \"https://cdn.jsdelivr.net/npm/vega-embed@6?noext\",\n",
       "    };\n",
       "\n",
       "    function maybeLoadScript(lib, version) {\n",
       "      var key = `${lib.replace(\"-\", \"\")}_version`;\n",
       "      return (VEGA_DEBUG[key] == version) ?\n",
       "        Promise.resolve(paths[lib]) :\n",
       "        new Promise(function(resolve, reject) {\n",
       "          var s = document.createElement('script');\n",
       "          document.getElementsByTagName(\"head\")[0].appendChild(s);\n",
       "          s.async = true;\n",
       "          s.onload = () => {\n",
       "            VEGA_DEBUG[key] = version;\n",
       "            return resolve(paths[lib]);\n",
       "          };\n",
       "          s.onerror = () => reject(`Error loading script: ${paths[lib]}`);\n",
       "          s.src = paths[lib];\n",
       "        });\n",
       "    }\n",
       "\n",
       "    function showError(err) {\n",
       "      outputDiv.innerHTML = `<div class=\"error\" style=\"color:red;\">${err}</div>`;\n",
       "      throw err;\n",
       "    }\n",
       "\n",
       "    function displayChart(vegaEmbed) {\n",
       "      vegaEmbed(outputDiv, spec, embedOpt)\n",
       "        .catch(err => showError(`Javascript Error: ${err.message}<br>This usually means there's a typo in your chart specification. See the javascript console for the full traceback.`));\n",
       "    }\n",
       "\n",
       "    if(typeof define === \"function\" && define.amd) {\n",
       "      requirejs.config({paths});\n",
       "      require([\"vega-embed\"], displayChart, err => showError(`Error loading script: ${err.message}`));\n",
       "    } else {\n",
       "      maybeLoadScript(\"vega\", \"5\")\n",
       "        .then(() => maybeLoadScript(\"vega-lite\", \"5.16.3\"))\n",
       "        .then(() => maybeLoadScript(\"vega-embed\", \"6\"))\n",
       "        .catch(showError)\n",
       "        .then(() => displayChart(vegaEmbed));\n",
       "    }\n",
       "  })({\"config\": {\"view\": {\"continuousWidth\": 300, \"continuousHeight\": 300}}, \"data\": {\"name\": \"data-682965ded9ae85430f72e67516b9e89e\"}, \"mark\": {\"type\": \"arc\", \"innerRadius\": 0}, \"encoding\": {\"color\": {\"field\": \"name\", \"type\": \"nominal\"}, \"theta\": {\"field\": \"count\", \"type\": \"quantitative\"}}, \"$schema\": \"https://vega.github.io/schema/vega-lite/v5.16.3.json\", \"datasets\": {\"data-682965ded9ae85430f72e67516b9e89e\": [{\"name\": \"Apples\", \"count\": 5}, {\"name\": \"Bananas\", \"count\": 6}, {\"name\": \"Oranges\", \"count\": 6}, {\"name\": \"Grapes\", \"count\": 8}, {\"name\": \"Dragon Fruits\", \"count\": 10}]}}, {\"mode\": \"vega-lite\"});\n",
       "</script>"
      ],
      "text/plain": [
       "alt.Chart(...)"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# create data \n",
    "df = pd.DataFrame({\n",
    "    'name': ['Apples','Bananas','Oranges','Grapes','Dragon Fruits'],\n",
    "    'count': [5,6,6,8,10]\n",
    "})\n",
    "\n",
    "# plot\n",
    "alt.Chart(df).mark_arc(innerRadius=slider.value).encode(\n",
    "    theta='count',\n",
    "    color='name'\n",
    ")"
   ]
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "venv",
   "language": "python",
   "name": "venv"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.10.12"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 5
}