在Mac上的R时区警告 [英] r timezone warning on mac

问题描述

当我使用POSIX命令运行脚本时，我收到了令人讨厌的时区警告，我决定进行调查.在启动时运行以下命令

I've been getting annoying time zone warnings when I run a script with POSIX commands to I decided to investigate. When I run the following commands on startup

Sys.time()
Sys.Date()
Sys.timezone()

我知道

> date()
[1] "Mon Nov 27 09:10:32 2017"
> Sys.time()
[1] "2017-11-27 16:10:51 GMT"
> Sys.Date()
[1] "2017-11-27"
> Sys.timezone()
[1] NA
> 

当我查看日期&在我的mac设置中的时区"选项卡上，我看到时区已正确设置为山区标准时间".最后，当我第一次运行一些查找时区信息的代码时，我收到以下警告消息

When I look under the Date & Time Zone tab in my mac settings, I see that the time zone is set correctly to Mountain Standard Time. Finally, when I first run some code that looks for time zone information I get the following warning message

Warning messages:
1: In as.POSIXlt.POSIXct(x, tz) :
  unknown timezone 'zone/tz/2017c.1.0/zoneinfo/America/Denver'

据我所知，我的Mac上没有类似"zone/tz/..."的路径，所以问题是如何使POSIX在正确的位置查找时区信息

As far as I can tell I don't have a path on my mac that looks like "zone/tz/..." so the question is how to get POSIX looking in the correct place(s) for timezone information.

推荐答案

根据2017年11月30日发布的R 3.4.3中的新功能列表，

According to the new features list in R 3.4.3, released Nov 30 2017,

已添加解决方法，以更改 macOS 10.13"High Sierra"中的时区文件，然后在 10.13.1，因此默认时区是从 使用--with-internal-tzcode配置R时的系统设置 (macOS上的默认设置).

A workaround has been added for the changes in location of time-zone files in macOS 10.13 'High Sierra' and again in 10.13.1, so the default time zone is deduced correctly from the system setting when R is configured with --with-internal-tzcode (the default on macOS).

使用Microsoft版本的R的用户可以在2018年1月10日获得MRO 3.4.3.

MRO 3.4.3 will be available on 2018-01-10 for those using Microsoft's version of R.

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