我是R的新手，我正在寻找一种方法来循环我的工作时间。
我希望例如在数据框中选择0h00和1h00之间的小时
在1h00-2h00之后的选定小时之后，直到最后做同样的事情
这是我从现在开始做的事情：
daily_data = read.csv("/U/k/Documents/eco.csv", header=TRUE, stringsAsFactors=FALSE)
#copy our data frame
daily_data2= daily_data
daily_hour= daily_data$time
#to get my hours
library(lubridate)
#to get the format hour minut second
daily_data2$time=format(ymd_hms(daily_hour), "%H:%M:%S")
# get min and max
min(daily_data2$time)
max(daily_data2$time)
times=daily_data2$time
#order by time
daily_data2= daily_data2[ order(daily_data2$time , decreasing = FALSE ),]
#nnumber of rows
nrow(daily_data2)
这是我的数据：
[1] "00:30:51" "00:30:51" "00:30:51" "00:30:51" "00:30:51"
[6] "00:30:51" "00:30:51" "00:30:51" "00:30:51" "00:30:51"
[11] "00:57:46" "00:57:46" "00:57:46" "00:57:46" "00:57:46"
[16] "00:57:46" "00:57:46" "00:57:46" "00:57:46" "00:57:46"
[21] "00:57:46" "00:57:46" "00:57:46" "00:57:46" "00:57:46"
[26] "00:57:46" "00:57:46" "00:57:46" "00:57:46" "00:57:46"
[31] "01:01:42" "01:01:42" "01:01:42" "01:01:42" "01:01:42"
[36] "01:01:42" "01:01:42" "01:41:50" "01:41:50" "01:41:50"
[41] "01:41:50" "01:41:50" "01:41:50" "01:41:50" "01:41:50"
[46] "01:41:50" "01:41:50" "01:41:50" "01:41:50" "01:41:50"
[51] "01:54:32" "01:54:32" "01:54:32" "01:54:32" "01:54:32"
[56] "01:54:32" "01:54:32" "02:04:40" "02:04:40" "02:04:40"
[61] "02:04:40" "02:04:40" "02:04:40" "02:04:40" "02:04:40"
[66] "02:04:40" "02:04:40" "02:04:40" "02:04:40" "02:04:40"
[71] "02:04:40" "02:04:40" "02:04:40" "02:04:40" "02:04:40"
[76] "02:04:40" "02:04:40" "02:04:40" "02:04:40" "02:04:40"
[81] "02:04:40" "02:04:40" "02:04:40" "02:04:40" "02:40:41"
[86] "02:40:41" "02:40:41" "02:40:41" "02:51:17" "02:51:17"
[91] "02:51:17" "02:51:17" "02:51:17" "02:51:17" "02:51:17"
[96] "02:51:17" "02:51:17" "02:51:17" "03:36:38" "03:36:38"
[101] "03:36:38" "03:36:38" "04:06:30" "04:06:30" "04:06:30"
[106] "04:06:30" "04:06:30" "04:06:30" "04:06:30" "04:06:30"
[111] "04:41:21" "04:41:21" "04:41:21" "04:41:21" "04:46:08"
[116] "04:46:08" "04:46:08" "04:46:08" "04:46:08" "04:46:08"
[121] "04:46:08" "04:46:08" "04:46:08" "04:46:08" "04:46:08"
[126] "04:48:17" "04:48:17" "04:48:17" "04:48:17" "04:48:17"
[131] "04:48:17" "04:48:17" "05:04:21" "05:04:21" "05:04:21"
[136] "05:04:21" "05:04:21" "05:04:21" "05:04:21" "05:04:21"
[141] "05:35:54" "05:35:54" "05:35:54" "05:35:54" "05:40:34"
[146] "05:40:34" "05:40:34" "05:40:34" "05:59:41" "05:59:41"
dput():
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)), .Names = c("visitorID", "variationID", "categoryID", "actionID",
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答案 0 :(得分：1)
您可以沿着这些方向行事（使用示例数据作为df）：
library(lubridate)
df$time = hms(df$time) # Convert to a time class
df$hour = hour(df$time) # Extract only the hour component
df[df$hour == 7,] # Perform subsetting
visitorID variationID categoryID actionID time hour
23 1.608152e+16 190949 279 185973 7H 13M 32S 7
24 1.608152e+16 190949 280 0 7H 13M 32S 7
25 1.608152e+16 190949 281 115960 7H 13M 32S 7
26 1.608152e+16 190949 282 136482 7H 13M 32S 7
解决方案的核心是将您的角色时间表示转换为实际时间戳。之后，R提供了许多工具，例如来自lubridate的hour函数来提取小时组件。