先后加载data.table和dplyr会出现错误

Question

我遇到了一个以前从未遇到过的问题。当我单独加载data.table包（版本1.9.4)，然后尝试子集数据集以删除变量时，我不会遇到任何问题。但是，当我同时加载plyr（版本1.8.2)和dplyr（版本0.4.1)时，我会得到以下错误（在toy dataset中也尝试了相同的错误）。注意，原始文件在Excel中，我使用库(readxl)将文件读成RData文件格式（文件vahere.RData在这里(https://goo.gl/kzi5bd)。文件有三个变量--LINK_ID（数字）、TMC（字符）、MPORegion（字符）。我得到的错误是：

Error in `[.tbl_df`(x, r, vars, with = FALSE) : 
unused argument (with = FALSE)

我不记得以前遇到过这个错误。如果有人对正在发生的事情有任何见解，我将非常感谢。我在两台独立的机器上尝试了它(Windows7)，得到了相同的错误。这两台机器的sys.info如下所示：

Machine 1 - sysname "Windows", release "7 x64", version "build 7601, Service Pack 1", machine "x86-64"
Machine 2 - sysname "Windows", release "7 x64", version "build 7601, Service Pack 1", machine "x86-64"

> library(data.table)
  data.table 1.9.4  For help type: ?data.table
  *** NB: by=.EACHI is now explicit. See README to restore previous behaviour.
> load("vahere.RData")
> vahere[is.na(vahere)] <- "RestofVA"
> vahere <- setDT(vahere)
> 
> # Drop link id and identify unique tmc to region
> uniqtmcs <- subset(vahere,select=-c(1))
> library(plyr)
> library(dplyr)
Attaching package: ‘dplyr’
The following objects are masked from ‘package:plyr’:
arrange, count, desc, failwith, id,
mutate, rename, summarise, summarize
The following objects are masked from ‘package:data.table’:
between, last
The following object is masked from ‘package:stats’:
filter
The following objects are masked from ‘package:base’:
intersect, setdiff, setequal, union

> rm(vahere)
> load("vahere.RData")
> vahere[is.na(vahere)] <- "RestofVA"
> vahere <- setDT(vahere)
> 
> # Drop link id and identify unique tmc to region
> uniqtmcs <- subset(vahere,select=-c(1))
Error in `[.tbl_df`(x, r, vars, with = FALSE) : 
unused argument (with = FALSE) 

Answer 1

输入文件被破坏了，我为在论坛上发帖道歉。我没有收到任何关于文件被破坏的警告，并且与另一个玩具数据集运行时也出现了完全相同的错误。