大多数时候在数据分析中，人的名字和姓氏连接在一起，或者我们可以说它们存储在一个空间中，因此我们需要将它们分开以使数据易于阅读。要在 R 中为名字和姓氏创建单独的列，我们可以使用 tidyr 包的提取功能。
查看下面给出的示例以了解如何完成。
以下代码段创建了一个示例数据框 -
Names<-c("John Jones","Steve Smith","Pat Cummins","David Warner","Andrew Flintoff","Aaron Finch","Mitchell Starc","Nathan Lyon","Mathew Wade","Adam Zampa","Adam Gilchrist","Ricky Ponting","Glenn McGrath","Ben Cutting","John Cena","Brock Williams","Rubel Hussain","Soumya Sarkar","Mehidy Hasan","Liton Das")
df1<-data.frame(Names)
df1创建以下数据框 -
Names 1 John Jones 2 Steve Smith 3 Pat Cummins 4 David Warner 5 Andrew Flintoff 6 Aaron Finch 7 Mitchell Starc 8 Nathan Lyon 9 Mathew Wade 10 Adam Zampa 11 Adam Gilchrist 12 Ricky Ponting 13 Glenn McGrath 14 Ben Cutting 15 John Cena 16 Brock Williams 17 Rubel Hussain 18 Soumya Sarkar 19 Mehidy Hasan 20 Liton Das
要加载 tidyr 包并在 df1 中为名字和姓氏创建单独的列，请将以下代码添加到上述代码段中 -
library(tidyr)
extract(df1,Names,c("First_Name","Last_Name"), "([^ ]+) (.*)")输出结果如果您将上述所有给定的片段作为单个程序执行，它会生成以下输出 -
First_Name Last_Name 1 John Jones 2 Steve Smith 3 Pat Cummins 4 David Warner 5 Andrew Flintoff 6 Aaron Finch 7 Mitchell Starc 8 Nathan Lyon 9 Mathew Wade 10 Adam Zampa 11 Adam Gilchrist 12 Ricky Ponting 13 Glenn McGrath 14 Ben Cutting 15 John Cena 16 Brock Williams 17 Rubel Hussain 18 Soumya Sarkar 19 Mehidy Hasan 20 Liton Das
以下代码段创建了一个示例数据框 -
Names<-c("Kane Williamson","Devon Conway","Trent Boult","Ross Taylor","Martin Guptill","Tim Southee","James Neesham","Lockie Ferguson","Ish Sodhi","Matt Henry","Tom Latham","Mark Chapman","Henry Nicholos","Tom Bundell","Sachin Tendulkar","Rahul Dravid","Chris Gayle","Tabraiz Shamsi","Aiden Makram","David Miller")
df2<-data.frame(Names)
df2创建以下数据框 -
Names 1 Kane Williamson 2 Devon Conway 3 Trent Boult 4 Ross Taylor 5 Martin Guptill 6 Tim Southee 7 James Neesham 8 Lockie Ferguson 9 Ish Sodhi 10 Matt Henry 11 Tom Latham 12 Mark Chapman 13 Henry Nicholos 14 Tom Bundell 15 Sachin Tendulkar 16 Rahul Dravid 17 Chris Gayle 18 Tabraiz Shamsi 19 Aiden Makram 20 David Miller
要在 df2 中为名字和姓氏创建单独的列，请将以下代码添加到上述代码段中 -
extract(df2,Names,c("First_Name","Last_Name"), "([^ ]+) (.*)")输出结果如果您将上述所有给定的片段作为单个程序执行，它会生成以下输出 -
First_Name Last_Name 1 Kane Williamson 2 Devon Conway 3 Trent Boult 4 Ross Taylor 5 Martin Guptill 6 Tim Southee 7 James Neesham 8 Lockie Ferguson 9 Ish Sodhi 10 Matt Henry 11 Tom Latham 12 Mark Chapman 13 Henry Nicholos 14 Tom Bundell 15 Sachin Tendulkar 16 Rahul Dravid 17 Chris Gayle 18 Tabraiz Shamsi 19 Aiden Makram 20 David Miller