Tidyverse和dplyr-错误包或名称空间

Question

我似乎不能让filter函数与tidyverse的加载一起工作。我已经比较了代码，知道它是正确的，但每次我都会收到错误消息。我已经检查了多个在线资源，但似乎都没有帮助。我还更新了所有的包，并重新启动了它们。如有任何帮助，我们不胜感激！

这是我的代码：

library(tidyverse)

ggplot(data = mpg) +
  geom_point(mapping = aes(x = displ, y = Hwy))

filter(mpg, cyl == 8)
filter(diamonds, carat > 3)

错误：

library(tidyverse)

Error: package or namespace load failed for ‘tidyverse’ in loadNamespace(I, 
c(lib.loc, .libPaths()), versionCheck = vI[[i]]):
 namespace ‘rlang’ 0.4.2 is already loaded, but >= 0.4.3 is required
In addition: Warning message:
package ‘tidyverse’ was built under R version 3.6.3 

filter(mpg, cyl == 8)

Error in filter(mpg, cyl == 8) : object 'cyl' not found
    In addition: Warning messages:
    1: In data.matrix(data) : NAs introduced by coercion
    2: In data.matrix(data) : NAs introduced by coercion
    3: In data.matrix(data) : NAs introduced by coercion
    4: In data.matrix(data) : NAs introduced by coercion
    5: In data.matrix(data) : NAs introduced by coercion
    6: In data.matrix(data) : NAs introduced by coercion

    filter(diamonds, carat > 3)

    Error in filter(diamonds, carat > 3) : object 'carat' not found

Answer 1

您的问题是tidyverse没有加载到R会话中，所以当您调用filter时，它来自stats包，而不是dplyr。这就是为什么在R中使用名称空间(如dplyr::filter )是一种很好的实践，这样您就可以确切地知道要调用哪个函数。

要修复加载tidyverse时出现的错误，请更新rlang库：

update.packages()

然后试一试

dplyr::filter(mtcars, cyl == 8)