lubridate Questions
8
Solved
As a R novice I'm pulling my hair out trying to debug cryptic R errors. I have csv that containing 150k lines that I load into a data frame named 'date'. I then use lubridate to convert this charac...
4
Solved
This is the result I want:
library(lubridate)
res <- structure(
c(
16160, 16251, 16343, 16435, 16525, 16616, 16708,
16800, 16891, 16982, 17074, 17166, 17256, 17347, 17439, 17531,
17621, 1...
1
Solved
4
Solved
Is there an easy way in R for me to itemize all valid days that occurred between two specified dates? For instance, I'd like the following inputs:
itemizeDates(startDate="12-30-11", endDate="1-4-1...
7
Solved
I would like to use lubridate to calculate age in years given their date of birth and today's date. Right now I have this:
library(lubridate)
today<-mdy(08312015)
dob<-mdy(09071982)
today-do...
4
Solved
I would like to retain my current date column in year-month format as date. It currently gets converted to chr format. I have tried as_datetime but it coerces all values to NA.
The format I am loo...
1
R switches from PDT to PST at 1:36:14 and not at 2:00:00 - Lubridate assigns time zone before switch
When looking at date-time values overlapping the timezone change from PDT to PST, it seems like R switches timezones at 1:36:14 and not at 2:00:00 as expected. Specifically, R assigns PST timezones...
6
Solved
I need to find all 'next friday' corresponding to a set of dates.
For instance 2015-08-03 (Monday 3rd, August, 2015) as an input should return 2015-08-07 (Friday 7th, August, 2015) as an output.
...
4
Solved
Using lubridate, how to calculate the last day of the previous quarter for a given date?
The below formula doesn't seem to work for Nov 3rd, 2014 (other dates work)
library(lubridate)
date = as.PO...
Tinsel asked 19/11, 2014 at 11:33
2
Solved
The wday() function in the lubridate package with the option label = TRUE returns the name of the day of the week in English. I'd like to know if it is possible to get the name of day of the week i...
2
Solved
I am looking to combine lubridate intervals such that if they overlap, take the min value from the internal first in time and the max value from the internal last in time and summarise to create a ...
6
Solved
I'm working with a csv which unfortunately has logged datetimes using the number format of 42705 although it should be 01/12/2016.
I'd like to convert it to the right format in R using lubridate o...
6
Solved
I have a large data set of time periods, defined by a 'start' and and an 'end' column. Some of the periods overlap.
I would like to combine (flatten / merge / collapse) all overlapping time period...
3
Solved
I use lubridate and figured that this would be so easy
ymd("2010-01-31")+months(0:23)
But look what one gets. It is all messed up!
[1] "2010-01-31 UTC" "2010-03-03 UTC" "2010-03-31 UTC" "2010-...
3
Solved
Hi I'm trying to get a sequence of dates with lubridate
This doesn't work
seq(ymd('2012-04-07'),ymd('2013-03-22'),by=week(1))
the base command
seq(as.Date('2012-04-7'),as.Date('2013-03-22'),'w...
3
Solved
dates <- NULL
date <- as.Date("01/01/2014","%d/%m/%Y")
dates <- data.frame(date=as.Date(character())
,cal_day_in_year_num = numeric()
,cal_week_id = numeric()
,cal_week_start_date = a...
2
Solved
I have encountered some very peculiar behaviour in R. I think it might even be a bug, but I'm asking here to check if someone is familiar with it or knows a solution.
What I'm trying to do is the ...
3
Solved
I am looking to add and subtract six months (bond time) reliably with lubridate.
For example, adding six months to 12/31/2014 should result in 6/30/2015,
and adding to 2/28/2014 should result in 8/...
5
Solved
Given a POSIXct date time, how do you extract the first day of the month for aggregation?
library(lubridate)
full.date <- ymd_hms("2013-01-01 00:00:21")
7
Solved
I have the following datetime:
t <- "2018-05-01 23:02:50 UTC"
I want to split it to time and date.
When I apply date(t) I get the date part.
But when I use lubridate's hms, parse_date_time...
4
Solved
I am developing a tidyverse-based data workflow, and came across a situation where I have a data frame with lots of time intervals. Let's call the data frame my_time_intervals, and it can be reprod...
4
Solved
2
Solved
I'm having trouble understanding how to use the guess_formats function in lubridate. I have a vector of dates in some unknown set/order of formats. I'd like to convert them to a Date object (or at ...
2
Solved
3
Solved
I have a dataset with people's complete age as strings (e.g., "10 years 8 months 23 days) in R, and I need to transform it into a numeric variable that makes sense. I'm thinking about converti...
Vane asked 1/12, 2021 at 20:59
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