Berikut adalah beberapa contoh kode untuk ditunjukkan menggunakan Google Visualization API.
Contoh Tabel
function drawTable() { var data = new google.visualization.DataTable(); data.addColumn('string', 'Name'); data.addColumn('number', 'Salary'); data.addColumn('boolean', 'Full Time'); data.addRows(5); data.setCell(0, 0, 'John'); data.setCell(0, 1, 10000, '$10,000'); data.setCell(0, 2, true); data.setCell(1, 0, 'Mary'); data.setCell(1, 1, 25000, '$25,000'); data.setCell(1, 2, true); data.setCell(2, 0, 'Steve'); data.setCell(2, 1, 8000, '$8,000'); data.setCell(2, 2, false); data.setCell(3, 0, 'Ellen'); data.setCell(3, 1, 20000, '$20,000'); data.setCell(3, 2, true); data.setCell(4, 0, 'Mike'); data.setCell(4, 1, 12000, '$12,000'); data.setCell(4, 2, false); var table = new google.visualization.Table(document.getElementById('table_div')); table.draw(data, {showRowNumber: true, width: '100%', height: '100%'}); google.visualization.events.addListener(table, 'select', function() { var row = table.getSelection()[0].row; alert('You selected ' + data.getValue(row, 0)); }); }
Contoh Tabel Kustom
<style> .bold-green-font { font-weight: bold; color: green; } .bold-font { font-weight: bold; } .right-text { text-align: right; } .large-font { font-size: 15px; } .italic-darkblue-font { font-style: italic; color: darkblue; } .italic-purple-font { font-style: italic; color: purple; } .underline-blue-font { text-decoration: underline; color: blue; } .gold-border { border: 3px solid gold; } .deeppink-border { border: 3px solid deeppink; } .orange-background { background-color: orange; } .orchid-background { background-color: orchid; } .beige-background { background-color: beige; } </style> ... function drawTable() { var cssClassNames = { 'headerRow': 'italic-darkblue-font large-font bold-font', 'tableRow': '', 'oddTableRow': 'beige-background', 'selectedTableRow': 'orange-background large-font', 'hoverTableRow': '', 'headerCell': 'gold-border', 'tableCell': '', 'rowNumberCell': 'underline-blue-font'}; var options = {'showRowNumber': true, 'allowHtml': true, 'cssClassNames': cssClassNames}; var data = new google.visualization.DataTable(); data.addColumn('string', 'Name'); data.addColumn('number', 'Salary'); data.addColumn('boolean', 'Full Time'); data.addRows(5); data.setCell(0, 0, 'John'); data.setCell(0, 1, 10000, '$10,000', {'className': 'bold-green-font large-font right-text'}); data.setCell(0, 2, true, {'style': 'background-color: red;'}); data.setCell(1, 0, 'Mary', null, {'className': 'bold-font'}); data.setCell(1, 1, 25000, '$25,000', {'className': 'bold-font right-text'}); data.setCell(1, 2, true, {'className': 'bold-font'}); data.setCell(2, 0, 'Steve', null, {'className': 'deeppink-border'}); data.setCell(2, 1, 8000, '$8,000', {'className': 'deeppink-border right-text'}); data.setCell(2, 2, false, null); data.setCell(3, 0, 'Ellen', null, {'className': 'italic-purple-font large-font'}); data.setCell(3, 1, 20000, '$20,000'); data.setCell(3, 2, true); data.setCell(4, 0, 'Mike'); data.setCell(4, 1, 12000, '$12,000'); data.setCell(4, 2, false); var container = document.getElementById('table'); var table = new google.visualization.Table(container); table.draw(data, options); table.setSelection([{'row': 4}]); }
Contoh Pengukur
Suhu:
<html> <head> <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script> <script type="text/javascript"> google.charts.load('current', {'packages':['gauge']}); google.charts.setOnLoadCallback(drawGauge); var gaugeOptions = {min: 0, max: 280, yellowFrom: 200, yellowTo: 250, redFrom: 250, redTo: 280, minorTicks: 5}; var gauge; function drawGauge() { gaugeData = new google.visualization.DataTable(); gaugeData.addColumn('number', 'Engine'); gaugeData.addColumn('number', 'Torpedo'); gaugeData.addRows(2); gaugeData.setCell(0, 0, 120); gaugeData.setCell(0, 1, 80); gauge = new google.visualization.Gauge(document.getElementById('gauge_div')); gauge.draw(gaugeData, gaugeOptions); } function changeTemp(dir) { gaugeData.setValue(0, 0, gaugeData.getValue(0, 0) + dir * 25); gaugeData.setValue(0, 1, gaugeData.getValue(0, 1) + dir * 20); gauge.draw(gaugeData, gaugeOptions); } </script> </head> <body> <div id="gauge_div" style="width:280px; height: 140px;"></div> <input type="button" value="Go Faster" onclick="changeTemp(1)" /> <input type="button" value="Slow down" onclick="changeTemp(-1)" /> </body> </html>
Contoh interaksi
Contoh ini menunjukkan cara menggabungkan visualisasi untuk interaktivitas yang lebih kompleks.
Menunjukkan fitur berikut:
- Cara menggunakan objek DataView untuk membatasi dan memformat data dalam DataTable,
- Bagaimana menghubungkan dua visualisasi ke data yang sama,
- Cara menggunakan peristiwa 'sort' dari visualisasi Tabel,
- Cara menggunakan pemformat untuk memformat ulang data yang ditampilkan.
Klik pada {i>header<i} tabel untuk melihat diagram kolom yang juga diurutkan.
Perhatikan bahwa Kontrol dan Dasbor memungkinkan Anda menggabungkan beberapa diagram bersama dengan kontrol untuk memanipulasi data yang ditampilkan.
function drawSort() { var data = new google.visualization.DataTable(); data.addColumn('string', 'Name'); data.addColumn('number', 'Salary'); data.addColumn('boolean', 'Full Time'); data.addRows(5); data.setCell(0, 0, 'John'); data.setCell(0, 1, 10000); data.setCell(0, 2, true); data.setCell(1, 0, 'Mary'); data.setCell(1, 1, 25000); data.setCell(1, 2, true); data.setCell(2, 0, 'Steve'); data.setCell(2, 1, 8000); data.setCell(2, 2, false); data.setCell(3, 0, 'Ellen'); data.setCell(3, 1, 20000); data.setCell(3, 2, true); data.setCell(4, 0, 'Mike'); data.setCell(4, 1, 12000); data.setCell(4, 2, false); var view = new google.visualization.DataView(data); view.setColumns([0, 1]); var formatter = new google.visualization.NumberFormat({prefix: '$'}); formatter.format(data, 1); // Apply formatter to second column var table = new google.visualization.Table(document.getElementById('table_sort_div')); table.draw(data, {width: '100%', height: '100%'}); var chart = new google.visualization.BarChart(document.getElementById('chart_sort_div')); chart.draw(view); google.visualization.events.addListener(table, 'sort', function(event) { data.sort([{column: event.column, desc: !event.ascending}]); chart.draw(view); }); }
Contoh Halaman HTML Lengkap
Contoh menyeluruh untuk membuat halaman web dengan diagram visualisasi yang disematkan di dalamnya. Tindakan ini juga menunjukkan diagram yang terhubung ke Google Spreadsheets dan dua diagram yang berinteraksi menggunakan visualisasi Peristiwa.
Contoh ini menampilkan halaman statistik sederhana untuk film populer dan lokasi bioskop dari perusahaan jaringan bioskop terkenal.
Halaman ini mencakup visualisasi Peta dan Tabel yang berinteraksi satu sama lain untuk menampilkan lokasi bioskop. Halaman ini berisi diagram kolom yang menampilkan jumlah tiket yang terjual untuk setiap film per lokasi. Ia mengambil datanya dari sebuah Google Spreadsheet. Versi spreadsheet ini yang dipublikasikan dapat dilihat untuk kelengkapannya.
<html> <head> <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script> <script type="text/javascript"> google.charts.load('current', { 'packages': ['table', 'map', 'corechart'], // Note: you will need to get a mapsApiKey for your project. // See: https://developers.google.com/chart/interactive/docs/basic_load_libs#load-settings 'mapsApiKey': 'AIzaSyD-9tSrke72PouQMnMX-a7eZSW0jkFMBWY' }); google.charts.setOnLoadCallback(initialize); function initialize() { // The URL of the spreadsheet to source data from. var query = new google.visualization.Query( 'https://spreadsheets.google.com/pub?key=pCQbetd-CptF0r8qmCOlZGg'); query.send(draw); } function draw(response) { if (response.isError()) { alert('Error in query'); } var ticketsData = response.getDataTable(); var chart = new google.visualization.ColumnChart( document.getElementById('chart_div')); chart.draw(ticketsData, {'isStacked': true, 'legend': 'bottom', 'vAxis': {'title': 'Number of tickets'}}); var geoData = google.visualization.arrayToDataTable([ ['Lat', 'Lon', 'Name', 'Food?'], [51.5072, -0.1275, 'Cinematics London', true], [48.8567, 2.3508, 'Cinematics Paris', true], [55.7500, 37.6167, 'Cinematics Moscow', false]]); var geoView = new google.visualization.DataView(geoData); geoView.setColumns([0, 1]); var table = new google.visualization.Table(document.getElementById('table_div')); table.draw(geoData, {showRowNumber: false, width: '100%', height: '100%'}); var map = new google.visualization.Map(document.getElementById('map_div')); map.draw(geoView, {showTip: true}); // Set a 'select' event listener for the table. // When the table is selected, we set the selection on the map. google.visualization.events.addListener(table, 'select', function() { map.setSelection(table.getSelection()); }); // Set a 'select' event listener for the map. // When the map is selected, we set the selection on the table. google.visualization.events.addListener(map, 'select', function() { table.setSelection(map.getSelection()); }); } </script> </head> <body> <table align="center"> <tr valign="top"> <td style="width: 50%;"> <div id="map_div" style="width: 400px; height: 300;"></div> </td> <td style="width: 50%;"> <div id="table_div"></div> </td> </tr> <tr> <td colSpan=2> <div id="chart_div" style="align: center; width: 700px; height: 300px;"></div> </td> </tr> </table> </body> </html>
Contoh Wrapper Kueri
Contoh ini menunjukkan cara membuat objek JavaScript yang menggabungkan banyak aspek pengiriman kueri untuk Anda. Objek ini, yang disebut QueryWrapper, dibuat instance-nya dengan string kueri, handle untuk visualisasi, dan serangkaian opsi untuk visualisasi. Class ini mengekspos satu metode ke pemanggil eksternal, sendAndDraw()
, yang mengirimkan string kueri, menangani respons, dan memanggil draw()
pada visualisasi, atau menampilkan pesan error jika kueri menampilkan error. Halaman host di sini menampilkan hasil dalam visualisasi diagram organisasi.
Berikut adalah kode untuk halaman host:
<!DOCTYPE html>
<html>
<head>
<title>Query Wrapper Example</title>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript" src="querywrapper.js"></script>
<script type="text/javascript">
google.charts.load('current', {'packages' : ['orgchart']});
google.charts.setOnLoadCallback(function() { sendAndDraw('') });
var dataSourceUrl = 'https://spreadsheets.google.com/tq?key=rCaVQNfFDMhOM6ENNYeYZ9Q&pub=1';
var query;
function sendAndDraw(queryString) {
var container = document.getElementById('orgchart');
var orgChart = new google.visualization.OrgChart(container);
query && query.abort();
query = new google.visualization.Query(dataSourceUrl + queryString);
var queryWrapper = new QueryWrapper(query, orgChart, {'size': 'large'}, container);
queryWrapper.sendAndDraw();
}
</script>
</head>
<body>
<h1>Query Wrapper Example</h1>
<form action="">
<span> This example uses the following spreadsheet: <br />
<a href="https://spreadsheets.google.com/pub?key=rCaVQNfFDMhOM6ENNYeYZ9Q">
https://spreadsheets.google.com/pub?key=rCaVQNfFDMhOM6ENNYeYZ9Q
</a></span>
<br /><br />
<select onChange="sendAndDraw(this.value)">
<option value="">No query string</option>
<option value="&tq=limit 3">query=limit 3</option>
<option value="&tq=select G,H">(Error) query=select G,H</option>
</select>
</form>
<br />
<div id="orgchart"></div>
</body>
</html>
Berikut ini JavaScript untuk objek QueryWrapper.
/** * A google.visualization.Query Wrapper. Sends a * query and draws the visualization with the returned data or outputs an * error message. * * DISCLAIMER: This is an example code which you can copy and change as * required. It is used with the google visualization API which is assumed to * be loaded to the page. For more info see: * https://developers.google.com/chart/interactive/docs/reference#Query */ /** * Constructs a new query wrapper with the given query, visualization, * visualization options, and error message container. The visualization * should support the draw(dataTable, options) method. * @constructor */ var QueryWrapper = function(query, visualization, visOptions, errorContainer) { this.query = query; this.visualization = visualization; this.options = visOptions || {}; this.errorContainer = errorContainer; this.currentDataTable = null; if (!visualization || !('draw' in visualization) || (typeof(visualization['draw']) != 'function')) { throw Error('Visualization must have a draw method.'); } }; /** Draws the last returned data table, if no data table exists, does nothing.*/ QueryWrapper.prototype.draw = function() { if (!this.currentDataTable) { return; } this.visualization.draw(this.currentDataTable, this.options); }; /** * Sends the query and upon its return draws the visualization. * If the query is set to refresh then the visualization will be drawn upon * each refresh. */ QueryWrapper.prototype.sendAndDraw = function() { var query = this.query; var self = this; query.send(function(response) {self.handleResponse(response)}); }; /** Handles the query response returned by the data source. */ QueryWrapper.prototype.handleResponse = function(response) { this.currentDataTable = null; if (response.isError()) { this.handleErrorResponse(response); } else { this.currentDataTable = response.getDataTable(); this.draw(); } }; /** Handles a query response error returned by the data source. */ QueryWrapper.prototype.handleErrorResponse = function(response) { var message = response.getMessage(); var detailedMessage = response.getDetailedMessage(); if (this.errorContainer) { google.visualization.errors.addError(this.errorContainer, message, detailedMessage, {'showInTooltip': false}); } else { throw Error(message + ' ' + detailedMessage); } }; /** Aborts the sending and drawing. */ QueryWrapper.prototype.abort = function() { this.query.abort(); };
Contoh Wrapper Kueri Tabel
Ini adalah contoh yang menunjukkan cara menampilkan set data besar dalam visualisasi tabel yang di-page tanpa mengambil semua data dalam satu permintaan. Hal ini berguna saat ada data dalam jumlah besar dan Anda ingin menghindari overhead saat meminta atau menyimpan semua data sekaligus di halaman Anda.
JavaScript menentukan objek, TableQueryWrapper, yang mengelola objek google.visualization.Query
untuk membuat permintaan, serta visualisasi tabel, untuk menangani pengurutan dan penomoran halaman. Objek ini dibuat instance-nya dengan instance google.visualization.Query
,
handle ke elemen halaman
yang digunakan untuk menyimpan visualisasi dan error apa pun yang ditampilkan, serta opsi untuk diteruskan
ke metode draw()
(termasuk jumlah baris yang harus diambil,
sebagai opsi pageSize
). Objek ini mengelola visualisasi tabel dengan menangkap dan menangani peristiwa paging dan pengurutan.
Saat halaman pengguna maju atau mundur, TableQueryWrapper menangani peristiwa dengan membuat dan mengirimkan kueri baru menggunakan nilai LIMIT dan OFFSET yang sesuai untuk mengisi ulang halaman tabel. Demikian pula, ketika pengguna mengklik kolom untuk mengubah tata urutan, TableQueryWrapper akan menangani peristiwa dengan membuat dan mengirimkan kueri baru dengan klausa ORDER BY yang sesuai, dan direset ke offset 0.
Pada contoh berikut, kotak dropdown memungkinkan Anda memilih jumlah baris tabel yang akan ditampilkan. Jika diubah, halaman host akan membuat instance TableQueryWrapper baru, kemudian mengirimkan kueri baru dengan klausa LIMIT yang mencerminkan jumlah baris yang dipilih, dan tanpa klausa OFFSET (artinya, melompat kembali ke baris pertama).
Berikut adalah kode untuk halaman host:
<!DOCTYPE html>
<html>
<head>
<title>Table Query Wrapper Example</title>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript" src="tablequerywrapper.js"></script>
<script type="text/javascript">
google.charts.load('current', {'packages' : ['table']});
google.charts.setOnLoadCallback(init);
var dataSourceUrl = 'https://spreadsheets.google.com/tq?key=rh_6pF1K_XsruwVr_doofvw&pub=1';
var query, options, container;
function init() {
query = new google.visualization.Query(dataSourceUrl);
container = document.getElementById("table");
options = {'pageSize': 5};
sendAndDraw();
}
function sendAndDraw() {
query.abort();
var tableQueryWrapper = new TableQueryWrapper(query, container, options);
tableQueryWrapper.sendAndDraw();
}
function setOption(prop, value) {
options[prop] = value;
sendAndDraw();
}
</script>
</head>
<body>
<p>This example uses the following spreadsheet: <br />
<a href="https://spreadsheets.google.com/pub?key=rh_6pF1K_XsruwVr_doofvw">
https://spreadsheets.google.com/pub?key=rh_6pF1K_XsruwVr_doofvw
</a>
</p>
<form action="">
Number of rows to show:
<select onChange="setOption('pageSize', parseInt(this.value, 10))">
<option value="0">0</option>
<option value="3">3</option>
<option selected=selected value="5">5</option>
<option value="8">8</option>
<option value="-1">-1</option>
</select>
</form>
<br />
<div id="table"></div>
</body>
</html>
Berikut adalah kode JavaScript untuk objek TableQueryWrapper:
/** * A wrapper for a query and a table visualization. * The object only requests 1 page + 1 row at a time, by default, in order * to minimize the amount of data held locally. * Table sorting and pagination is executed by issuing * additional requests with appropriate query parameters. * E.g., for getting the data sorted by column 'A' the following query is * attached to the request: 'tq=order by A'. * * Note: Discards query strings set by the user on the query object using * google.visualization.Query#setQuery. * * DISCLAIMER: This is an example code which you can copy and change as * required. It is used with the google visualization API table visualization * which is assumed to be loaded to the page. For more info see: * https://developers.google.com/chart/interactive/docs/gallery/table * https://developers.google.com/chart/interactive/docs/reference#Query */ /** * Constructs a new table query wrapper for the specified query, container * and tableOptions. * * Note: The wrapper clones the options object to adjust some of its properties. * In particular: * sort {string} set to 'event'. * page {string} set to 'event'. * pageSize {Number} If number <= 0 set to 10. * showRowNumber {boolean} set to true. * firstRowNumber {number} set according to the current page. * sortAscending {boolean} set according to the current sort. * sortColumn {number} set according to the given sort. * @constructor */ var TableQueryWrapper = function(query, container, options) { this.table = new google.visualization.Table(container); this.query = query; this.sortQueryClause = ''; this.pageQueryClause = ''; this.container = container; this.currentDataTable = null; var self = this; var addListener = google.visualization.events.addListener; addListener(this.table, 'page', function(e) {self.handlePage(e)}); addListener(this.table, 'sort', function(e) {self.handleSort(e)}); options = options || {}; options = TableQueryWrapper.clone(options); options['sort'] = 'event'; options['page'] = 'event'; options['showRowNumber'] = true; var buttonConfig = 'pagingButtonsConfiguration'; options[buttonConfig] = options[buttonConfig] || 'both'; options['pageSize'] = (options['pageSize'] > 0) ? options['pageSize'] : 10; this.pageSize = options['pageSize']; this.tableOptions = options; this.currentPageIndex = 0; this.setPageQueryClause(0); }; /** * Sends the query and upon its return draws the Table visualization in the * container. If the query refresh interval is set then the visualization will * be redrawn upon each refresh. */ TableQueryWrapper.prototype.sendAndDraw = function() { this.query.abort(); var queryClause = this.sortQueryClause + ' ' + this.pageQueryClause; this.query.setQuery(queryClause); this.table.setSelection([]); var self = this; this.query.send(function(response) {self.handleResponse(response)}); }; /** Handles the query response after a send returned by the data source. */ TableQueryWrapper.prototype.handleResponse = function(response) { this.currentDataTable = null; if (response.isError()) { google.visualization.errors.addError(this.container, response.getMessage(), response.getDetailedMessage(), {'showInTooltip': false}); } else { this.currentDataTable = response.getDataTable(); this.table.draw(this.currentDataTable, this.tableOptions); } }; /** Handles a sort event with the given properties. Will page to page=0. */ TableQueryWrapper.prototype.handleSort = function(properties) { var columnIndex = properties['column']; var isAscending = properties['ascending']; this.tableOptions['sortColumn'] = columnIndex; this.tableOptions['sortAscending'] = isAscending; // dataTable exists since the user clicked the table. var colID = this.currentDataTable.getColumnId(columnIndex); this.sortQueryClause = 'order by `' + colID + (!isAscending ? '` desc' : '`'); // Calls sendAndDraw internally. this.handlePage({'page': 0}); }; /** Handles a page event with the given properties. */ TableQueryWrapper.prototype.handlePage = function(properties) { var localTableNewPage = properties['page']; // 1, -1 or 0 var newPage = 0; if (localTableNewPage != 0) { newPage = this.currentPageIndex + localTableNewPage; } if (this.setPageQueryClause(newPage)) { this.sendAndDraw(); } }; /** * Sets the pageQueryClause and table options for a new page request. * In case the next page is requested - checks that another page exists * based on the previous request. * Returns true if a new page query clause was set, false otherwise. */ TableQueryWrapper.prototype.setPageQueryClause = function(pageIndex) { var pageSize = this.pageSize; if (pageIndex < 0) { return false; } var dataTable = this.currentDataTable; if ((pageIndex == this.currentPageIndex + 1) && dataTable) { if (dataTable.getNumberOfRows() <= pageSize) { return false; } } this.currentPageIndex = pageIndex; var newStartRow = this.currentPageIndex * pageSize; // Get the pageSize + 1 so that we can know when the last page is reached. this.pageQueryClause = 'limit ' + (pageSize + 1) + ' offset ' + newStartRow; // Note: row numbers are 1-based yet dataTable rows are 0-based. this.tableOptions['firstRowNumber'] = newStartRow + 1; return true; }; /** Performs a shallow clone of the given object. */ TableQueryWrapper.clone = function(obj) { var newObj = {}; for (var key in obj) { newObj[key] = obj[key]; } return newObj; };
Contoh Tooltip Pengarahan Kursor
Contoh ini menunjukkan cara memproses peristiwa pengarahan mouse untuk menampilkan tooltip dalam diagram Anda.
<script> // barsVisualization must be global in our script tag to be able // to get and set selection. var barsVisualization; function drawMouseoverVisualization() { var data = new google.visualization.DataTable(); data.addColumn('string', 'Year'); data.addColumn('number', 'Score'); data.addRows([ ['2005',3.6], ['2006',4.1], ['2007',3.8], ['2008',3.9], ['2009',4.6] ]); barsVisualization = new google.visualization.ColumnChart(document.getElementById('mouseoverdiv')); barsVisualization.draw(data, null); // Add our over/out handlers. google.visualization.events.addListener(barsVisualization, 'onmouseover', barMouseOver); google.visualization.events.addListener(barsVisualization, 'onmouseout', barMouseOut); } function barMouseOver(e) { barsVisualization.setSelection([e]); } function barMouseOut(e) { barsVisualization.setSelection([{'row': null, 'column': null}]); } </script>