Year.Quarter to Quarter in R-误差为as.yearqtr

Question

> str(qtr) 
num 2016 

> qtr 
[1] 2016.4 

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

不应该得到“Q4”而不是“Q2”吗？我哪里错了？谢谢。

Answer 1

这也适用，可能会更容易：

library(zoo) 

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

[1]"2016 Q4" 

Answer 2

zoo::as.yearqtr()的输入是十进制年份。

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"