【发布时间】：2021-03-04 03:44:48
【问题描述】：
使用 R 3.6，我可以执行以下 NA 替换
> d <- zoo(data.frame(a = NA, b = 1), Sys.Date())
> d[is.na(d)] <- 1
> d
a b
2021-03-03 1 1
使用 R 4.0 我收到以下错误：
> d <- zoo(data.frame(a = NA, b = 1), Sys.Date())
> d[is.na(d)] <- 1
Error in as.Date.default(e) :
do not know how to convert 'e' to class “Date”
在 R 4.0 中是否更改了某些默认行为？
R 3.6 会话信息：
Microsoft Windows [Version 10.0.19041.804]
(c) 2020 Microsoft Corporation. All rights reserved.
C:\>R --no-site-file
R version 3.6.1 (2019-07-05) -- "Action of the Toes"
Copyright (C) 2019 The R Foundation for Statistical Computing
Platform: i386-w64-mingw32/i386 (32-bit)
R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.
Natural language support but running in an English locale
R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.
Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.
> library(zoo)
Attaching package: 'zoo'
The following objects are masked from 'package:base':
as.Date, as.Date.numeric
Warning message:
package 'zoo' was built under R version 4.0.4
> d <- zoo(data.frame(a = NA, b = 1), Sys.Date())
> d[is.na(d)] <- 1
> d
a b
2021-03-03 1 1
R 4.0 会话信息：
Microsoft Windows [Version 10.0.19041.804]
(c) 2020 Microsoft Corporation. All rights reserved.
C:\>R --no-site-file
R version 4.0.4 (2021-02-15) -- "Lost Library Book"
Copyright (C) 2021 The R Foundation for Statistical Computing
Platform: i386-w64-mingw32/i386 (32-bit)
R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.
Natural language support but running in an English locale
R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.
Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.
> library(zoo)
Attaching package: 'zoo'
The following objects are masked from 'package:base':
as.Date, as.Date.numeric
> d <- zoo(data.frame(a = NA, b = 1), Sys.Date())
> d[is.na(d)] <- 1
Error in as.Date.default(e) :
do not know how to convert 'e' to class "Date"
会话信息（3.6）：
> sessionInfo()
R version 3.6.1 (2019-07-05)
Platform: i386-w64-mingw32/i386 (32-bit)
Running under: Windows 10 x64 (build 19041)
Matrix products: default
locale:
[1] LC_COLLATE=English_United States.1252
[2] LC_CTYPE=English_United States.1252
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C
[5] LC_TIME=English_United States.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] zoo_1.8-8
loaded via a namespace (and not attached):
[1] compiler_3.6.1 grid_3.6.1 lattice_0.20-38
会话信息（4.0）：
> sessionInfo()
R version 4.0.4 (2021-02-15)
Platform: i386-w64-mingw32/i386 (32-bit)
Running under: Windows 10 x64 (build 19041)
Matrix products: default
locale:
[1] LC_COLLATE=English_United States.1252
[2] LC_CTYPE=English_United States.1252
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C
[5] LC_TIME=English_United States.1252
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] zoo_1.8-8
loaded via a namespace (and not attached):
[1] compiler_4.0.4 tools_4.0.4 grid_4.0.4 lattice_0.20-41
【问题讨论】：
-
我猜这与 R 的版本关系不大，而与您安装的
zoo软件包的版本关系更大。如果你在加载 zoo 后运行sessionInfo()，你在不同的 R 控制台中使用的是什么版本？ -
对于两者 --- 其他附加包：[1] zoo_1.8-8
-
我找到了一个在线编译器 R3.4.4, zoo 1.8.1 并且可以复制旧的行为，可能确实是一个错误或更改了例程。试试
d <- na.fill(d, 1)得到你想要的。 -
我是here @MrFlick
-
@neilfws，是的。 Achim 看了看，确定 R 的变化是造成这种情况的原因。