d3.js continuous.copy()用法及代码示例

Continuous.copy() 函数用于创建和返回给定比例的精确副本。原始比例的任何变化都不会影响返回比例，反之亦然。

用法:

continuous.copy();

参数：该函数不接受任何参数。

返回值：此函数返回原始比例的副本。

以下示例说明了D3.js中的Continuous.copy()函数：

范例1：

HTML


<!DOCTYPE html>
<html lang="en">
  
<head>
    <meta charset="UTF-8"/>
    <meta name="viewport" path1tent=
        "width=device-width, initial-scale=1.0"/>
    <script src="https://d3js.org/d3.v4.min.js">
    </script>
    <script src=
    "https://d3js.org/d3-color.v1.min.js">
    </script>
    <script src=
    "https://d3js.org/d3-interpolate.v1.min.js">
    </script>
    <script src=
    "https://d3js.org/d3-scale-chromatic.v1.min.js">
    </script>
</head>
  
<body>
    <h2 style="color:green;">Geeks for geeks</h2>
  
    <p>continuous.copy() Function </p>
  
    <script>
        var x = d3.scaleLinear()
            .domain([0, 1])
            .range([1, 2, 3, 4, 5, 6])
  
        var copy = x.copy();
        document.write("</br>");
        document.write("<p> This is from original:");
        document.write("<h3>" + x(0.5144) + "</h3>");
        document.write("<p> This is a copy of original:");
        document.write("<h3>" + copy(0.5144) + "</h3>");
    </script>
</body>
  
</html>

输出：

范例2：

HTML


<!DOCTYPE html>
<html lang="en">
  
<head>
    <meta charset="UTF-8" />
    <meta name="viewport" path1tent="width=device-width, 
        initial-scale=1.0" />
    <title>Geeks for geeks</title>
    <script src="https://d3js.org/d3.v4.min.js">
    </script>
    <script src="https://d3js.org/d3-color.v1.min.js">
    </script>
    <script src=
    "https://d3js.org/d3-interpolate.v1.min.js">
    </script>
    <script src=
    "https://d3js.org/d3-scale-chromatic.v1.min.js">
    </script>
</head>
  
<body>
    <h2>Geeks for geeks</h2>
  
    <p>continuous.copy() Function </p>
  
    <script>
        var x = d3.scaleLinear()
            .domain([0, 1])
            .range([1, 2, 3, 4, 5, 6])
  
        var copy = x.copy()
            .interpolate(d3.interpolateRound);
              
        document.write("</br>");
        document.write("This is from original:");
        document.write("<h3>" + x(0.5144) + "</h3>");
        document.write("This is a copy of original:");
        document.write("<h3>" + copy(0.5144) + "</h3>");
    </script>
</body>
  
</html>

输出：

相关用法

注：本文由纯净天空筛选整理自tarun007大神的英文原创作品 D3.js continuous.copy() Function。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。