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Converting "day of year" to "year", "month" and "day"

Jim Lemon 
Hi Jibrin,
solar_wind_sps<-data.frame(sws=306,date="2021-016")
solar_wind_spd
solar_wind_spd$date<-as.Date(solar_wind_spd$date,"%Y-%j")
solar_wind_spd

This changes the "date" field to an actual date object. If you just
want to change a character string date to another format:

solar_wind_spd$date<-format(as.Date(solar_wind_spd$date,%Y-%j),"%Y-%m-%d")

Jim

On Sat, Jan 16, 2021 at 4:55 AM Jibrin Alhassan
<jibrin.alhassan at unn.edu.ng> wrote:

Thread (17 messages)

Jibrin Alhassan Converting "day of year" to "year", "month" and "day" Jan 15 Rui Barradas Converting "day of year" to "year", "month" and "day" Jan 15 Bert Gunter Converting "day of year" to "year", "month" and "day" Jan 15 Bill Dunlap Converting "day of year" to "year", "month" and "day" Jan 15 Martin Møller Skarbiniks Pedersen Converting "day of year" to "year", "month" and "day" Jan 15 Jim Lemon Converting "day of year" to "year", "month" and "day" Jan 15 Jibrin Alhassan Converting "day of year" to "year", "month" and "day" Jan 15 Rui Barradas Converting "day of year" to "year", "month" and "day" Jan 15 Peter Dalgaard Converting "day of year" to "year", "month" and "day" Jan 16 Jibrin Alhassan Converting "day of year" to "year", "month" and "day" Jan 17 Jeff Newmiller Converting "day of year" to "year", "month" and "day" Jan 17 Rui Barradas Converting "day of year" to "year", "month" and "day" Jan 17 Jibrin Alhassan Converting "day of year" to "year", "month" and "day" Jan 17 Jibrin Alhassan Converting "day of year" to "year", "month" and "day" Jan 20 Jibrin Alhassan Converting "day of year" to "year", "month" and "day" Jan 20 Jibrin Alhassan Converting "day of year" to "year", "month" and "day" Jan 20 Jibrin Alhassan Problem on Converting "day of year" to "year", "month" and "day" has been solved Jan 21