XML package to import and process XML data format | R package

What is XML?

• XML stands for EXtensible Markup Language
• XML Is a markup language, much like HTML
• XML is designed to transmit data, not display data
• XML tags are not predefined. You need to define the labels yourself.
• XML is designed to be self-describing.
• XML is a recommended standard by W3C

For a more detailed introduction to XML, please see the link: http://www.w3school.com.cn/xml/xml_intro.asp

R How does the language parse XML?

The R language provides an XML package to parse XML data format, including importing XML data and processing XML data. Examples are as follows.

## 加载XML包
library('XML')
## 自定义一个XML数据内容
content <-   
&#39;<note>  
<name>shujuren</name>  
<url>http://shujuren.org</url>  
<date>2016-01-01</date>  
</note>&#39;
doc <- xmlParse(content, encoding="UTF-8")xmlToList(doc)
# use an R-level node representationdoc1 <- xmlTreeParse(content)xmlToList(doc1)
## 转换成DataFrame类型xmlToDataFrame(doc)

The results of the data frame are as follows:

            text1            
            shujuren2 
            http://shujuren.org3          
            2016-01-01

Thinking:
The address book on the mobile phone can be imported into XML data format. How to import and process it using XML in R language?
Reference link:
http://www.php.cn/xml_rss-353691.html

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