如何使用d3.js导入XML数据? [英] How to import XML data using d3.js?
问题描述
有人可以提供一个基本示例,如何使用d3从XML文件导入数据?
can someone provide a basic example how to import data from an XML file using d3?
我的XML文件如下所示:
My XML file looks like this:
<data>
<value>71</value>
<value>12</value>
<value>44</value>
<value>88</value>
</data>
如何将这些值添加到数据数组?这是我尝试到目前为止:
How can I add these values to a data array? Here is what I tried so far:
d3.xml("values.xml", function(xml) {
d3.select(xml).selectAll("data").each(function(data) {
d3.select(data).selectAll("value");
//add data to array?;
};
});
//use Array
推荐答案
传递到回调的XML对象是XML DOM的根元素(参见 https://github.com/mbostock/d3/wiki/Requests#wiki-d3_xml ),因此您需要使用JavaScript XML / DOM进行处理访问设施(请参见 http://www.hiteshagrawal.com/javascript/javascript -parsing-xml-in-javascript )。
The XML object that is passed into the callback is the root element of the XML DOM (see https://github.com/mbostock/d3/wiki/Requests#wiki-d3_xml ), and therefore you need to process it using the JavaScript XML/DOM access facilities (see http://www.hiteshagrawal.com/javascript/javascript-parsing-xml-in-javascript ).
我写了一个小例子,说明如何使用d3.xml创建一个条形图在原始的d3 barchart示例 http://mbostock.github.com/d3/tutorial /bar-1.html ):
I have written a small example that shows how to use d3.xml to create a bar chart (based on the original d3 barchart example http://mbostock.github.com/d3/tutorial/bar-1.html ):
链接查看示例: http://bl.ocks.org/2772585
使用XML代码链接: https://gist.github.com/lgrammel/2772585
Link with XML code: https://gist.github.com/lgrammel/2772585
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