初めてWatson IoT Platformを使ってみよう、というかたのためのガイドです。
Watson IoT Platformを使ってみるでIoTアプリを準備しました。
IoTダッシュボードを作ってみるでIoTデータを可視化するダッシュボードを作っていきます。
デバイスからのIoTデータをリアルタイムで可視化します
- ここではAlps Smart IoT ModuleからのデータをWatson IoT Platformへ送付している想定で、飛来するデータをリアルタイムで表示してみます
- 下記のフローをコピペします
デバイスからのIoTデータをリアルタイムで可視化
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margin-left:100px;\" id=\"alerttext\"></span>\n </div>\n\n <div id='x1' align=\"left\">\n x1\n </div>\n\n<div id=\"y1\" align=\"left\">\n 参考URL\n <ul>\n <li><a href=\"http://qiita.com/egplnt/items/af867711a7191923b2ff\">Watson IoT Platformを使ってみる</a></li>\n <li><a href=\"https://internetofthings.ibmcloud.com/#/\">Watson IoT Platform</a></li>\n <li><a href=\"https://developer.ibm.com/recipes/tutorials/use-the-simulated-device-to-experience-the-iot-foundation/\">Recipe - Simulator</a></li>\n </ul>\n マニュアル\n <ul>\n <li><a href=\"http://ibm.com/iot\">IBM IoT</a></li>\n <li><a href=\"https://docs.internetofthings.ibmcloud.com/ja/\">Watson IoT Platform資料ページ</a></li>\n <li><a href=\"https://developer.ibm.com/recipes/\">Recipe</a></li>\n </ul>\n</div>\n\n<div id=\"z1\">\n\tcopyright (c) abc.com All rights reserved.\n</div>\n</div>\n\n\n<script>\nvar connection = new WebSocket('wss://このIoTアプリの名前.mybluemix.net/wss/flow510');\n\nconnection.onopen = function () {\n console.log(\"websocket connected\");\n};\n\nconnection.onerror = function (error) {\n console.log('WebSocket Error ' + error);\n};\n\nconnection.onmessage = function (m) {\n\tdoIt(m);\n};\n\n// ゲージとラインチャートを準備\n// ラインチャートのAPIは https://developers.google.com/chart/interactive/docs/reference\ngoogle.load('visualization', '1', {packages:['gauge', 'corechart']});\ngoogle.setOnLoadCallback(drawChart);\n\nfunction drawChart() {\n\td1GaugeData = google.visualization.arrayToDataTable([\n\t\t['Label', 'Value'],\n\t\t['照度', 0]\n\t]);\n d1GaugeOptions = {\n\t\twidth: 500, height: 150,\n\t\tmin: 0, max: 500,\n\t\tyellowFrom:300, yellowTo: 400,\n redFrom: 400, redTo: 500,\n\t\tminorTicks: 5\n\t};\n d1Gauge = new google.visualization.Gauge(document.getElementById('d1'));\n\td1Gauge.draw(d1GaugeData, d1GaugeOptions);\n\n\n f1ChartData = google.visualization.arrayToDataTable(\n [[\"時刻\",\"照度\"],['10:00:00',300]] );\n f1ChartData.removeRow(0);\n f1ChartOptions = { title: '照度',\n legend: { position: 'bottom' },\n backgroundColor: {stroke:'#c1d8ac' ,strokeWidth:10, fill:'#ffffff'}\n };\n f1Chart = new google.visualization.LineChart(document.getElementById('f1'));\n f1Chart.draw(f1ChartData, f1ChartOptions);\n\n};\n\n//websocketからの毎秒のデータを受信してゲージ・チャートへ表示する\nfunction doIt(msg){\n console.log(\"doit:\" + msg.data);\n\tvar msgs = JSON.parse(msg.data);\n\n // msgs[4]は二重配列なので\"msgs[4][0]\"で温度の値を取り出してリアルタイム表示する\n d1GaugeData = google.visualization.arrayToDataTable([\n ['Label', 'Value'],\n ['照度', msgs[4][0]]\n ]);\n d1Gauge.draw(d1GaugeData, d1GaugeOptions);\n console.log(\"msgs[4][0] = \" + msgs[4][0]);\n\n f1ChartData.addRow( [ msgs[0][0], msgs[4][0] ] );\n if ( f1ChartData.getNumberOfRows() > 9) {\n f1ChartData.removeRow(0);\n }\n f1Chart.draw(f1ChartData, f1ChartOptions);\n\n\t// 各センサー要素を取り出して、画面へ表示\n target = document.getElementById(\"e1data\"); 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- 「IBM IoT」インプットノードのdevice_idに実際に使用しているデバイスのIDを指定します
「test510.htmlを返す」テンプレートノードの１２６行目の
var connection = new WebSocket('wss://このIoTアプリの名前.mybluemix.net/wss/flow510');をアプリ名に合わせて変更します無事「AmbientLight」(照度）がリアルタイムで表示されました。加速度や気圧など他の値も空いている欄に表示していきます
