Disclaimer: The title of the question might be wrong, because I don't know what causes this behaviour. The 'issue' is that viewing a POSIXlt object in RStudio viewer shows an infinite linked list, ...

I recently came across R code that compared a POSIXlt date object with a date string. as.POSIXlt.date("2007-02-02") >= "2007-02-01" [1] FALSE The result, surprisingly at least for me, was FAL...

I have 2 data sets, each containing a date-time value in POSIXlt format, and some other numeric and character variables. I want to combine both data sets based on the date-time column. But the dat...

I have a column in my dataframe as datetime (factor) with the values as "15-10-2017 16:41:00". I wanted this data to be converted as "2017-10-15 16:41:00". When i try to convert...

I am interested, what "ct" and "lt" (in POSIXct and POSIXlt) mean. Are they some kind of abbreviations? E.g., does "ct" mean "calendar time" and "lt" something else?

I recently came across dplyr and - as a newbie - like it very much. Hence, I try to convert some of my base-R code into dplyr-code. Working with air traffic control data, I am struggling with coe...

I have a problem. I downloaded data and tranformed dates into POSIXlt format df<-read.csv("007.csv", header=T, sep=";") df$transaction_date<-strptime(df$transaction_date, "%d.%m.%Y") df$inst...

1) R version 3.4.4 (2018-03-15) my.timedate <- as.POSIXlt('2016-01-01 16:00:00') # print(attributes(my.timedate)) print(my.timedate[['hour']]) [1] 16 2) R version 3.5.0 (2018-04-23) my....

This snippet options(digits.secs=3) s<-"12:00:00.188" fmt<-"%I:%M:%OS" print(strptime(s,fmt)) print(as.POSIXct(strptime(s,fmt))) gives this textual output: [1] "2017-09-12 00:00:00.188 CE...

I am not sure why it seems so difficult to find information regarding summarizing non-quantitative variables with stargazer. I would like a summary of the following time variable (number of observ...

My question comes from this question. The question had the following character string. x <- "2007-02-01 00:00:00" y <- "02/01/2007 00:06:10" If you try to convert this string to date-class...

This is the information contained within my dataframe: ## minuteofday: factor w/ 89501 levels "2013-06-01 08:07:00",... ## dDdt: num 7.8564 2.318 ... ## minutes: POSIXlt, format: NA NA NA I need...