防范意外时区转换 [英] Guard against accidental time-zone conversion

问题描述

在R中，我有一堆在GMT测量的日期时间值。我不断发生事故，一些功能或另一个失去了我的价值观的时区，甚至失去了类名。即使是基本的功能，如 c（）和 unlist（）：

In R, I have a bunch of datetime values that I measure in GMT. I keep running into accidents where some function or another loses the timezone on my values, or even loses the class name. Even on functions so basic as c() and unlist():

> dput(x)
structure(1317830532, class = c("POSIXct", "POSIXt"), tzone = "GMT")
> dput(c(x))
structure(1317830532, class = c("POSIXct", "POSIXt"))
> dput(list(x))
list(structure(1317830532, class = c("POSIXct", "POSIXt"), tzone = "GMT"))
> dput(unlist(list(x)))
1317830532

我觉得我是如果发生这种情况，我最不希望有一个真正的火星气候轨道器它。任何人都有任何策略来确保他们的日期保持投入？

I feel like I'm a hair's breadth away from having a real Mars Climate Orbiter moment if this happens when I least expect it. Anyone have any strategies for making sure their dates "stay put"?

推荐答案

为什么不将您的时区设置为GMT ， 然后？如果某些东西被转换为当前时区，它仍然是正确的。

Why not set your timezone to GMT for your R sessions, then? If something gets converted to the "current" timezone, it is still right.

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