Year.Quarter to Quarter in R- error in as.yearqtr

Question

> str(qtr)
num 2016

> qtr
[1] 2016.4

> format(as.yearqtr(qtr,"%Y.q"),"Q%q")
[1] "Q2"

我不应该得到＆＃34; Q4＆＃34;而不是＆＃34; Q2＆＃34;？我哪里错了？感谢。

Answer 1

zoo::as.yearqtr()的输入是十进制年。

试试这个：

library(zoo)
x <- 2106 + (0:11)/12
as.yearqtr(x)
 [1] "2106 Q1" "2106 Q1" "2106 Q1" "2106 Q2" "2106 Q2" "2106 Q2" "2106 Q3" "2106 Q3"
 [9] "2106 Q3" "2106 Q4" "2106 Q4" "2106 Q4"

或：

x <- 2106 + (0:3)/4

x
[1] 2106.00 2106.25 2106.50 2106.75

as.yearqtr(x)
[1] "2106 Q1" "2106 Q2" "2106 Q3" "2106 Q4"

Answer 2

这也有效，可能更容易：

library(zoo)

qtr=2016.4
as.yearqtr(toString(qtr), format="%Y.%q")

[1]"2016 Q4"