[R] creating a time series

[ahmet varlı]

Hello everyone,

� had 15 minutes of data from 2017-11-02 13:30:00 to  2022-11-26 23:45:00 and number of data is 177647

� would like to ask why my time series are less then my expectation.


baslangic <- as.POSIXct("2017-11-02 13:30:00", tz = "CET")
bitis <- as.POSIXct("2022-11-26 23:45:00", tz = "CET")  #
zaman_seti <- seq.POSIXt(from = baslangic, to = bitis, by = 60 * 15)


length(zaman_seti)
[1] 177642

but it has to be  177647



and secondly � have times in this format ( 2.11.2017 13:30/DD-MM-YYYY HH:MM:SS)

su_seviyeleri_data <- as.POSIXct(su_seviyeleri_data$kayit_zaman, format = "%Y-%m-%d %H:%M:%S")

I am using this code to change the format but it gives result as Na

How can � solve this problem?

Bests,





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