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Questions tagged [chron]

An R package for Chronological objects which can handle dates and times, written by David James.

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How to change date format to 2019-Feb-07 to 2019-02-07 in R?

I have a code that reads in data from a .txt file, in which there is a date column dd/mm/yyyy and time column HH:MM:SS and I want to merge the columns into one date time column yyyy/mm/dd HH:MM:SS. The data frame structure is: structure(list(V1 =…
Alex
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Running chron job on a single instance of spring service deployed on aws

I have a requirement to run a chron job weekly on only a single instance of a java spring service running on multiple aws instances in a cluster. I have the freedom to spawn an instance of same service in a different cluster for handling the special…
Aditya Raman
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Convert chr to time format using chorn

I am trying to transform my date dataset from chr to time format. Here is my code : time<-f1%>% mutate(`ymd_hms(Timestamp)`=strftime(f1$`ymd_hms(Timestamp)`, tz="GMT", format = "%H:%M:%S"))%>% transform(as.numeric(f1$SpotPrice)) …
NIrbhay Mathur
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How to programmatically ad a character to a string in R

I apologize in advance if this has been posted elsewhere. I am new to R, and I am having trouble manipulating a dataframe. I have a column in my dataframe that contains times in the format of hh mm ss. However, some values only have a single "0" in…
peter-j-schmidt
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xset in BASH script does not work under Cron

To learn about BASH scripting, I set myself the objective to write a Cron script which shuts down a PC with Mint 20 when activity on the Ethernet interface dropped below a threshold over an 1 hour. I mainly (but not exclusively) use the PC as…
Pete
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R Convert char to time

I have a column of military time values, df1$appt_times in the format of "13:30" All of them, 5 characters, "00:00". I have tried POSIXct but it added today's date to the values. I have also tried lubridate and couldn't get that to work. Most…
Retep Yarrum
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How to break a 24 hour day into 4 hour time buckets (Chron())

Using library(chron) Here is the structure(c(0.876736111111111, 0.876666666666667, 0.876435185185185, 0.876354166666667, 0.876319444444444, 0.876284722222222, 0.876134259259259, 0.876122685185185, 0.876006944444444, 0.87587962962963,…
Michael Scott
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How to plot time intervals without date components on the x-axis using dygraph and xts function?

I'm trying to plot time series with the dygraph function. A single diagram represents the course of a specific variable on different days. Since series correspond to different days, I would like the x-axis to be date-agnostic. It should only contain…
SkogensKonung
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Finding the Mean and SD of time variables, taking times past midnight into account in R

I am trying to figure out how to take the mean and SD of bedtimes, but I am having difficulty managing times after midnight. These concepts make sense logically (I think) but figuring out how to code it in R is tricky. Right now, those pull the mean…
Zach
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R subsetting a big dataframe based on date values

data frame with following strucutre : 'data.frame': 4371 obs. of 6 variables: "$ tg : num 0.0403 0.0404 0.0404 0.0404 0.0405 ... $ date : Factor w/ 4371 levels "2/20/2020 10:00",..: 841 842 843 844 845 846 847 848 849 850 ... $ lgp_bar:…
Pri
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add minutes to time of day (hh:mm), start from new day if time > 24

I have a time variable as hh:mm. I want to add numeric minutes to that. If time goes over 24:00, it should count a new day. For example: time starts at 23:45, delay is 20 minutes, real start time is 00:05. Example data frame: df <-…
Schillerlocke
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Calculate time difference between two hh:mm variables over the span of a day

I have an issue calculating the time difference between two variables. To be exactly the time between falling asleep and waking up. I thought about using chron for doing so and this is my example. DF <- data.frame(time_start = c("20:00", "21:30",…
Schillerlocke
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getting wrong output when changing hours(not formatted)into hh:mm in R

I have a column within a data frame containing hours that was created by dividing by 60 from another column that is comprised of minutes and would like them formatted to hh:mm I found this post to be helpful: Convert a decimal number to HH:MM:SS in…
BigBird
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Create a sequence of times in R?

I want to create a sequence of times 00:00 - 12:00 and 12:00 to 00:00 with 10 minutes step. How can I do this in R? I have tried with: library(chron) t <- merge(0:23, seq(0, 50, by = 10)) chron(time = paste(x$x, ':', x$y), format = c(times =…
SteveS
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shell script won't change directory and execute python script

So i have a file success.sh python3 /home/ubuntu/foo.py and this runs in Cron with: * * * * * /home/ubuntu/success.sh >> /tmp/cron_output where foo.py is simply print("DSVSDVDSVSDFDS") however as soon as I try to run what i actually want to run…
kianwhatt
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