Question

我每天在R代码中使用管道功能%>%。前几天，我更新了R Studio及其所有软件包，现在%>%不再可用。

我已经重新启动并尝试重新加载dplyr和tidyverse软件包。

install.packages(dplyr)
library(dplyr)
install.packages(tidyverse)
library(tidyverse)

psu_fk_abun99_16 = psu_fk_abun %>% 
  col_types = cols(protected_status = col_character())

psu_fk_abun中的错误％>％col_types = cols（protected_status = col_character（））：找不到函数“％>％<-”

sessionInfo(package = NULL)

R version 3.5.1 (2018-07-02)
Platform: x86_64-apple-darwin15.6.0 (64-bit)
Running under: macOS  10.14.2

Matrix products: default
BLAS: /System/Library/Frameworks/Accelerate.framework/Versions/A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
LAPACK: /Library/Frameworks/R.framework/Versions/3.5/Resources/lib/libRlapack.dylib

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
 [1] magrittr_1.5    forcats_0.3.0   stringr_1.4.0   purrr_0.3.2     readr_1.3.0     tidyr_0.8.2     tibble_2.1.1    ggplot2_3.1.0  
 [9] tidyverse_1.2.1 dplyr_0.8.0.1  

loaded via a namespace (and not attached):
 [1] Rcpp_1.0.0       cellranger_1.1.0 pillar_1.3.1     compiler_3.5.1   plyr_1.8.4       bindr_0.1.1      tools_3.5.1      packrat_0.5.0   
 [9] lubridate_1.7.4  jsonlite_1.6     nlme_3.1-137     gtable_0.2.0     lattice_0.20-38  pkgconfig_2.0.2  rlang_0.3.4      cli_1.0.1       
[17] rstudioapi_0.10  haven_2.0.0      xfun_0.6         bindrcpp_0.2.2   withr_2.1.2      xml2_1.2.0       httr_1.4.0       knitr_1.21      
[25] generics_0.0.2   hms_0.4.2        grid_3.5.1       tidyselect_0.2.5 glue_1.3.0       R6_2.3.0         readxl_1.1.0     modelr_0.1.2    
[33] backports_1.1.3  scales_1.0.0     rvest_0.3.2      assertthat_0.2.0 colorspace_1.3-2 stringi_1.2.4    lazyeval_0.2.1   munsell_0.5.0   
[41] broom_0.5.1      crayon_1.3.4

Answer 1

您不能像这样使用magrittr管道：

您正在尝试两个对象同时创建两个对象。一个是psu_fk_abun99_16，另一个是col_types(psu_fk_abun)。警告告诉您，这是不可能的。

您的代码似乎丢失了一部分：可能意外删除了一行代码。函数“ col_types”在tidyverse的最新版本中不存在，但是是read_csv的自变量。因此，表达式col_types(psu_fk_abun)毫无意义。您知道您以前使用过哪些软件包版本吗？

找不到函数“％>％<-”

1 个答案: