posixct - "ct"和 "lt"(在 POSIXct 和 POSIXlt 中)是什么意思？

Question

我很感兴趣，“ct”和“lt”(在 POSIXct 和 POSIXlt 中)的含义。它们是某种缩写吗？例如，“ct”是否表示“日历时间”，“lt”是否表示其他意思？

Answer 1

我自己正在研究这个问题，这个问题出现在我的搜索结果中。

我看过这个问题的几个答案......但它们显然都是错的!这是明确的答案:

POSIXct

The basic POSIX measure of time, calendar time, is the number of seconds since the beginning of 1970, in the UTC timezone (GMT as described by the French).

POSIXlt

The corresponding R class we called POSIXlt (where the ‘lt’ stands for “local time”), which is a list with components as integer vectors, and so can represent a vector of broken-down times. We wanted to keep track of timezones, so where known the timezone is given by an attribute "tzone", the name of the timezone.

来源:R News

我终于安心了。