自定义图表
使用集合让一切井井有条
根据您的偏好保存内容并对其进行分类。
<html>
<head>
<!--Load the AJAX API-->
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript">
// Load the Visualization API and the piechart package.
google.charts.load('current', {'packages':['corechart']});
// Set a callback to run when the Google Visualization API is loaded.
google.charts.setOnLoadCallback(drawChart);
// Callback that creates and populates a data table,
// instantiates the pie chart, passes in the data and
// draws it.
function drawChart() {
// Create the data table.
var data = new google.visualization.DataTable();
data.addColumn('string', 'Topping');
data.addColumn('number', 'Slices');
data.addRows([
['Mushrooms', 3],
['Onions', 1],
['Olives', 1],
['Zucchini', 1],
['Pepperoni', 2]
]);
// Set chart options
var options = {'title':'How Much Pizza I Ate Last Night',
'width':400,
'height':300};
// Instantiate and draw our chart, passing in some options.
var chart = new google.visualization.PieChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
</script>
</head>
<body>
<!--Div that will hold the pie chart-->
<div id="chart_div" style="width:400; height:300"></div>
</body>
</html>
指定选项
每个图表都有许多可自定义的选项,包括标题、颜色、线条粗细、背景填充等。虽然图表工具团队已对默认图表外观进行了努力,但您可能想要自定义图表,例如添加标题或轴标签。
通过使用 option_name/option_value 属性定义 JavaScript 对象,为图表指定自定义选项。请使用图表文档中列出的选项名称。每个图表的文档都列出了一组可自定义的选项。例如,适用于饼图的选项包括“legend”“title”和“is3D”。所有选项都有规定的默认值。
以下对象定义了图例位置、图表标题、图表大小和饼图的 3D 选项:
var options = {
'legend':'left',
'title':'My Big Pie Chart',
'is3D':true,
'width':400,
'height':300
}
使用这些值更新上例中的 options 对象,以了解它们对图表的影响。
指定图表大小
一种很常见的设置选项是图表高度和宽度。您可以在两个位置指定图表大小:在容器 <div>
元素的 HTML 中,或在图表选项中指定。如果您在这两个位置都指定了尺寸,则图表通常会采用 HTML 中指定的尺寸。如果您未在 HTML 中或作为选项指定图表尺寸,则图表可能无法正确呈现。
在其中一个位置指定尺寸有诸多优势:
- 在 HTML 中指定大小 - 图表可能需要几秒钟的时间来加载和呈现。如果您已经在 HTML 中设置了图表容器的大小,那么页面布局在图表加载后不会发生跳动。
- 指定图表大小选项 - 如果图表大小使用 JavaScript,则您可以复制和粘贴 JavaScript,或者序列化、保存和恢复 JavaScript,并使图表的大小保持一致。
如未另行说明,那么本页面中的内容已根据知识共享署名 4.0 许可获得了许可,并且代码示例已根据 Apache 2.0 许可获得了许可。有关详情,请参阅 Google 开发者网站政策。Java 是 Oracle 和/或其关联公司的注册商标。
最后更新时间 (UTC):2024-07-10。
[null,null,["最后更新时间 (UTC):2024-07-10。"],[[["\u003cp\u003eThis webpage demonstrates how to create a basic pie chart using the Google Charts library and JavaScript.\u003c/p\u003e\n"],["\u003cp\u003eUsers can customize the chart's appearance through options like title, legend position, dimensions, and 3D effects.\u003c/p\u003e\n"],["\u003cp\u003eIt's recommended to specify chart size in either the HTML container or chart options for optimal rendering and layout.\u003c/p\u003e\n"],["\u003cp\u003eSpecifying chart size in HTML ensures a smoother page load while including it in chart options enhances portability and consistency.\u003c/p\u003e\n"]]],[],null,["# Customize the Chart\n\n```html\n\u003chtml\u003e\n \u003chead\u003e\n \u003c!--Load the AJAX API--\u003e\n \u003cscript type=\"text/javascript\" src=\"https://www.gstatic.com/charts/loader.js\"\u003e\u003c/script\u003e\n \u003cscript type=\"text/javascript\"\u003e\n\n // Load the Visualization API and the piechart package.\n google.charts.load('current', {'packages':['corechart']});\n\n // Set a callback to run when the Google Visualization API is loaded.\n google.charts.setOnLoadCallback(drawChart);\n\n // Callback that creates and populates a data table, \n // instantiates the pie chart, passes in the data and\n // draws it.\n function drawChart() {\n\n // Create the data table.\n var data = new google.visualization.DataTable();\n data.addColumn('string', 'Topping');\n data.addColumn('number', 'Slices');\n data.addRows([\n ['Mushrooms', 3],\n ['Onions', 1],\n ['Olives', 1],\n ['Zucchini', 1],\n ['Pepperoni', 2]\n ]);\n\n// Set chart options\n var options = {'title':'How Much Pizza I Ate Last Night',\n 'width':400,\n 'height':300};\n\n // Instantiate and draw our chart, passing in some options.\n var chart = new google.visualization.PieChart(document.getElementById('chart_div'));\n chart.draw(data, options);\n }\n \u003c/script\u003e\n \u003c/head\u003e\n\n \u003cbody\u003e\n\u003c!--Div that will hold the pie chart--\u003e\n \u003cdiv id=\"chart_div\" style=\"width:400; height:300\"\u003e\u003c/div\u003e\n \u003c/body\u003e\n\u003c/html\u003e\n```\n\nSpecify options\n---------------\n\nEvery chart has many customizable options, including title, colors, line thickness, background fill, and so on. Although the Chart Tools team has worked hard on the default chart appearance, you might want to customize your chart, for example to add titling or axis labels.\n\nSpecify custom options for your chart by defining a JavaScript object with *option_name* /*option_value* properties. Use the option names listed in the chart's documentation. Every chart's documentation lists a set of customizable options. For example, the [options available for the Pie Chart](/chart/interactive/docs/gallery/piechart#Configuration_Options) include 'legend', 'title', and 'is3D'. All options have a documented default value.\n\nThe following object defines the legend position, chart title, chart size, and a 3D option for a Pie Chart: \n\n```\nvar options = {\n 'legend':'left',\n 'title':'My Big Pie Chart',\n 'is3D':true,\n 'width':400,\n 'height':300\n}\n```\n\nUpdate the options object in the example above with these values to see how they affect the chart.\n\nSpecify Chart Size\n------------------\n\nOne very common option to set is the chart height and width. You can specify the chart size in two places: in the HTML of the container `\u003cdiv\u003e` element, or in the chart options. If you specify the size in both locations, the chart will generally defer to the size specified in the HTML. If you don't specify a chart size either in the HTML or as an option, the chart might not be rendered properly.\n\nThere are advantages to specifying the size in one or the other place:\n\n- **Specifying the size in HTML** - A chart can take a few seconds to load and render. If you have the chart container already sized in HTML, the page layout won't jump around when the chart is loaded.\n- **Specifying the size as a chart option** - If the chart size is in the JavaScript, you can copy and paste, or serialize, save, and restore the JavaScript and have the chart resized consistently.\n\n[**Next: *Drawing the Chart***](/chart/interactive/docs/basic_draw_chart)\n\nMore Information\n----------------\n\n- [Customizing charts](/chart/interactive/docs/customizing_charts)"]]