Lalitha, Try something like
with(data, table(cut(age, n), member_FLAG)) where data is a data frame with columns named age and member_FLAG and n is the number of age categories (bins) you want. This will give you the number of Ys and Ns in each bin, that you will need to convert to percentages. Also, you might want to check the help pages for table and cut. Cheers, Andy __________________________________ Andy Jaworski 518-1-01 Process Laboratory 3M Corporate Research Laboratory ----- E-mail: [EMAIL PROTECTED] Tel: (651) 733-6092 Fax: (651) 736-3122 lalitha viswanath <lalithaviswanath @yahoo.com> To Sent by: r-help@stat.math.ethz.ch [EMAIL PROTECTED] cc at.math.ethz.ch Subject [R] Query about using table 10/26/2006 01:44 PM Hi I have data of the following form ID age member_FLAG 1 25 Y 2 36.75 N 3 75.5 N ......... ......... I want to get a histogram of this data showing distribution of member_flag in each age-bin i.e. how many values in each age bin have a member_flag of 'Y' and how many have 'N'. I was able to do the same using barplot2. However I also need similar information in a tabular form using percentages. i.e in each age bin, what is the PERCENTAGE of IDs with a member_flag of 'Y' I am trying to work with table for the same, but would appreciate some guidance regarding the above. Thanks Lalitha ______________________________________________ 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. ______________________________________________ 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.