i have the following code - assimilating the maximum annual discharge each year ffrom a daily discharge record from year 1989-2005.
m <- read.table("D:/documents/5 stations/01014000.csv", sep =",") z <- zoo(m[,4],as.Date(as.character(m[,3]), "%m/%d/%Y")) x <- aggregate(z, floor(as.numeric(as.yearmon(time(z)))), max) #code suggested by Gabor Grothendieck which gives me the maximum discharge each year and the year itself.. what i am trying now is to produce the date when the maximum discharge was observed in the pattern yyyy-mm-dd, like: 1988 11/9/1988 18600 1989 5/8/1989 49000 ... 2005 4/26/2005 111000 thank you all in advance... -- View this message in context: http://www.nabble.com/problem-with-dates-in-zoo-package-tp22053103p22053103.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.