Hello Folks, I try to use plyr and reshape 2 to take a data frame of the form:
> head(cf_dt) isin dt 1 FR0109970386 2010-01-12 2 FR0109970386 2011-01-12 3 FR0109970386 2012-01-12 4 FR0116114978 2010-01-12 5 FR0116114978 2011-01-12 6 FR0116114978 2012-01-12 to create a matrix of the form FR0109970386 FR0116114978 ... 2010-01-12 2010-01-12 ... 2011-01-12 2011-01-12 ... 2012-01-12 2012-01-12 ... NA .... ... ... NA ... NA NA .... I would like to have 22 columns and 33 rows, since I have 22 bonds name and my longest cash flow is 33 dates long. Regards, Alex -- View this message in context: http://r.789695.n4.nabble.com/Data-frame-to-Matrix-by-category-tp4669669.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.