here i have a dataframe for eg:- DATETIME COL_A COL_B COL_C COL_D 1/1/2007 0:01 0 3 0 0 1/1/2007 0:02 0 0 3 0 1/1/2007 0:03 0 3 0 0 ....................... ..... ... ... .... 1/2/2007 0 0 3 0 1/2/2007 0:01 0 3 4 0 1/2/2007 0:02 0 3 0 0 ....................... ..... ... ... .... 1/3/2007 0 0 0 0 1/3/2007 0:01 0 0 4 0 1/3/2007 0:02 0 3 0 0 ....................... ..... ... ... ....
My requirement what is, i have to get the count for each "day " where COL_B = 3 For eg:- here i need to get like DATETIME COUNT(COL_B=3) ------------ ------------ 1/1/2007 2 1/2/2007 3 1/3/2007 1 ============================= ============================= and this way i tried to get, MyDF[MyDF["DATETIME"]=="1/2/2007"] ---> here this only select the row where DATETIME - column coming as "1/2/2007" - date and not selecting other rows where same date is coming (eg:- 1/1/2007 0:01). And here i need to get the complete records for that particular day, when i give date without giving timestamp. - Could anyone give a help ASAP ? - Thanks Antony. -- View this message in context: http://r.789695.n4.nabble.com/Get-count-by-day-for-particular-coulmn-tp4668915.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
