Here is my data. I tried table but it doesn't do what I want it to do when it graphs. I want a count of the types (R for one graph and A for another) by hour grouped by year. Hope that helps.
ID,YYYY,MM,DD,HH,MM,Type YEG,2002,01,01,01,24,A YEG,2002,01,01,02,40,R YEG,2002,01,01,05,39,R YEG,2002,01,01,09,17,A -----Original Message----- From: Deepayan Sarkar [mailto:[EMAIL PROTECTED] Sent: May 15, 2007 3:46 PM To: Spilak,Jacqueline [Edm] Cc: r-help@stat.math.ethz.ch Subject: Re: [R] How to group a count On 5/15/07, Spilak,Jacqueline [Edm] <[EMAIL PROTECTED]> wrote: > Hello R users > I have a dataset that has different types of records with different > dates and times pertaining to each. I would like to have a bar graph > of a count of the types(ie. The number of types) of recods by hour > grouped by year. So the count of the types would be the y axis, the > hour on the x axis and then grouped by year for easy comparison. I > think that I have to use barchart however I don't know how to get > barchart to do a count and not graph values. I think you want to use table or xtabs to get a frequency table, and use barchart on the result. Hard to say more without an example. -Deepayan ______________________________________________ R-help@stat.math.ethz.ch 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.