Pleae see ?hist.Date for how to use it, as you usage is nothing like the examples there.
However, I suspect you do not want a histogram but a barplot, as in with(dt_cycles, barplot(cycles, names=as.character(dates_releves))) (You may want to adjust the font size or date format. On Tue, 18 Oct 2005, [EMAIL PROTECTED] wrote: > Hi all > > I wish to draw an histogram... with dates but the following append, i > don't know where is the problem, help(hist.Date) works and i don't see > any usefull information on what i'm doing wrong... > >> hist.Date(dt_cycles) > Error: couldn't find function "hist.Date" >> hist.date(dt_cycles) > Error: couldn't find function "hist.date" >> cycles > [1] 7 1 2 5 14 5 >> dt_cycles > dates_releves cycles > 1 2005-07-01 7 > 2 2005-07-04 1 > 3 2005-07-06 2 > 4 2005-07-11 5 > 5 2005-07-25 14 > 6 2005-07-27 5 >> dates_releves<-as.Date(dates_releves) >> hist(dates_releves,cycles) > Error in hist.Date(dates_releves, cycles) : > invalid specification of 'breaks' >> hist(dates_releves~cycles) > Error in hist.default(dates_releves ~ cycles) : > 'x' must be numeric >> > > Any ideas would be great... > thks > guillaume. -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
