Question

我有两个系统。

以下代码在System A上传递，但在System B上传递。

responses <- data.frame(a = c(0,1,2,3,4),b = c(0,1,2,3,4))
section_vars <- c("a","b")

mutate_each(responses, funs(mean),one_of(section_vars)) %>%
    mutate(col1 =
             rowSums(
               select(.,one_of(section_vars)),
               na.rm = TRUE
             ) %>% as.integer()
    ) %>% .$col1

失败并显示错误：

Error "." not found

系统A（工作）：

R version 3.2.3 (2015-12-10)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 16.04 LTS

locale:
[1] C

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

other attached packages:
[1] dataBroker_1.141.0.0 dplyr_0.5.0          tidyr_0.5.1         
[4] data.table_1.9.6     RMySQL_0.10.9        DBI_0.4-1           

loaded via a namespace (and not attached):
 [1] Rcpp_0.12.5       codetools_0.2-14  withr_1.0.2       digest_0.6.9     
 [5] psych_1.6.6       foreach_1.4.3     assertthat_0.1    plyr_1.8.4       
 [9] chron_2.3-47      R6_2.1.2          magrittr_1.5      lazyeval_0.2.0   
[13] doParallel_1.0.10 devtools_1.12.0   iterators_1.0.8   tools_3.2.3      
[17] parallel_3.2.3    yaml_2.1.13       mnormt_1.5-4      memoise_1.0.0    
[21] tibble_1.0

系统B（错误）：

R version 3.2.5 (2016-04-14)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu precise (12.04.5 LTS)

locale:
[1] C

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

other attached packages:
[1] dataBroker_1.141.0.2 dplyr_0.5.0          tidyr_0.5.1          data.table_1.9.6     RMySQL_0.9-3         DBI_0.3.1           

loaded via a namespace (and not attached):
 [1] Rcpp_0.12.4      codetools_0.2-14 psych_1.4.8.11   foreach_1.4.2    assertthat_0.1   plyr_1.8.1       chron_2.3-47     R6_2.1.2         magrittr_1.0.1   lazyeval_0.1.10  doParallel_1.0.8
[12] iterators_1.0.7  tools_3.2.5      yaml_2.1.13      parallel_3.2.5

Answer 1

%>%运算符来自magrittr包，因此请确保您的magrittr版本是最新的。

点代词在某些系统上失败但在其他系统上失败

1 个答案: