Select 行数据框基于 R 编程中列出的值

Question

我正在使用 R 编程对体育数据进行探索性数据分析... 我想根据两个条件从数据框中打印记录条件：国家==“英格兰”||（或运算符）地面==地面可以是以下列表中的任何一个

List = c("Birmingham" ,"Bristol" ,"Cardiff" ,"Chester-le-Street" , 
              "Leeds" ,"East London" ,"Lord's", "The Oval",
              "Manchester" ,"Nottingham" ,"Southampton" ,"Taunton")

示例数据（提供的缩写图像）

data.frame(
  Ground = c('Hambantota', 'Benoni', 'Benoni', 'Hambantota', 'Hambantota',
             'Pallekele', 'Pallekele'),
  Country = c('Bangladesh', 'SouthAfrica', 'Pakistan', 'SriLanka', 'Bangladesh',
              'SriLanka', 'Bangladesh')
)

我正在尝试...

subset(WC_Grounds,WC_Grounds$Country=="England"||WC_Grounds %in% WC_Grounds_List)

但是它 returns 0 条记录

Answer 1

有

subset(WC_Grounds, WC_Grounds$Country=="England" | WC_Grounds$Ground %in% WC_Grounds_List)

为你工作？

|| and && - These operators are “short-circuiting”: as soon as || sees the first TRUE it returns TRUE without computing anything else. You should instead use | which is vectorized thus applying to the multiple values in your dataset.

这是一个使用我添加到您的问题中的简化示例数据的示例：

WC_Grounds <- data.frame(
  Ground = c('Hambantota', 'Benoni', 'Benoni', 'Hambantota', 'Hambantota',
             'Pallekele', 'Pallekele'),
  Country = c('Bangladesh', 'SouthAfrica', 'Pakistan', 'SriLanka', 'Bangladesh',
              'SriLanka', 'Bangladesh')
)

List = c('Hambantota', 'Benoni')

subset(WC_Grounds, WC_Grounds$Country == "SriLanka" | WC_Grounds$Ground %in% List)

#>       Ground     Country
#> 1 Hambantota  Bangladesh
#> 2     Benoni SouthAfrica
#> 3     Benoni    Pakistan
#> 4 Hambantota    SriLanka
#> 5 Hambantota  Bangladesh
#> 6  Pallekele    SriLanka

^{由 reprex package (v1.0.0)}

于 2021 年 3 月 20 日创建

Select 行数据框基于 R 编程中列出的值

Select rows from Data Frame based on listed values in R Programming

r

data-visualization

data-analysis