我的数据帧如下所示:
location eco
Germany eco
Netherlands eco
USA not-eco
Dubai not-eco
我想在数据框中创建一个新列,如果位置为"生态"则显示 TRUE,如果位置为"非生态"则显示 FALSE。结果应如下所示:
location eco logical
Germany eco TRUE
Netherlands eco TRUE
USA not-eco FALSE
Dubai not-eco FALSE
如何使用 R 执行此操作?
我们可以比较列eco
中的"eco"
值并创建一个逻辑列。
df$logical <- df$eco == "eco"
df
# location eco logical
#1 Germany eco TRUE
#2 Netherlands eco TRUE
#3 USA not-eco FALSE
#4 Dubai not-eco FALSE
数据
df <- structure(list(location = structure(c(2L, 3L, 4L, 1L), .Label = c("Dubai",
"Germany", "Netherlands", "USA"), class = "factor"), eco = structure(c(1L,
1L, 2L, 2L), .Label = c("eco", "not-eco"), class = "factor")),
class = "data.frame", row.names = c(NA, -4L))