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R 按时间序列填写时间频率表_R_Time Series - Fatal编程技术网
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R 按时间序列填写时间频率表

r

R 按时间序列填写时间频率表,r,time-series,R,Time Series,考虑一个时频表 2008-01-01 2008-01-03 2008-01-05 2008-01-06 2008-01-07 2008-01-08 1 8 2 2 3 1 请注意，2008-01-02和2008-01-04已丢失 预期结果如下所示： 2008-01-01 2008-01-02 2008-01-03 2008-01-04 2008-01-05 2008-01-06 2008

考虑一个时频表

2008-01-01 2008-01-03 2008-01-05 2008-01-06 2008-01-07 2008-01-08
         1          8          2          2          3          1
请注意，2008-01-02和2008-01-04已丢失

预期结果如下所示：

2008-01-01 2008-01-02 2008-01-03 2008-01-04 2008-01-05 2008-01-06 2008-01-07 2008-01-08
         1          0          8          0          2          2          3          1
或以日期框的形式：

   Time    Frequency
2008-01-01    1
2008-01-02    0
2008-01-03    8
2008-01-04    0
2008-01-05    2
2008-01-06    2
2008-01-07    3
2008-01-08    1
一个更好的选择是将指定的
级别转换为
因子
，然后执行
表


rndates <- range(dates)
table(factor(dates, levels = as.character(seq(rndates[1], rndates[2], by = "1 day"))))
#  2008-01-01 2008-01-02 2008-01-03 2008-01-04 2008-01-05 2008-01-06 2008-01-07 2008-01-08 
#        4          0          7          0          1          5          6          2 



rndates一个更好的选择是将
因子转换为指定了
级别的
因子，然后执行
表


rndates <- range(dates)
table(factor(dates, levels = as.character(seq(rndates[1], rndates[2], by = "1 day"))))
#  2008-01-01 2008-01-02 2008-01-03 2008-01-04 2008-01-05 2008-01-06 2008-01-07 2008-01-08 
#        4          0          7          0          1          5          6          2 



rndates