--- Farrel Buchinsky <[EMAIL PROTECTED]> wrote: > How do you create a table from a data frame? I tried > as.table( > name.of.data.frame) but it bombed out. > I will include the exact error message in my next > posting. If I recall > correctly, it said that the data.frame could not be > coerced to a table.
I may have misunderstood you. I was just thinking that you could get individual tables of interest from data.frame dff by table(dff[,1],dff[,2]) and so on. > > > On 10/2/07, John Kane <[EMAIL PROTECTED]> wrote: > > > > What am I missing here? > > > > Cannot you just create the table from the > data.frame > > and apply prop.table()to it? > > > > --- Farrel Buchinsky <[EMAIL PROTECTED]> wrote: > > > > > When one has raw data it is easy to create a > table > > > of one variable against > > > another and then calculate proportions > > > For example > > > a.nice.table<-table(a,b) > > > prop.table(a.nice.table,1) > > > > > > However, I looked at several papers and created > a > > > data frame of the > > > aggregate data. That means I acually created a > table > > > except it is a data > > > frame. The first column lists the name of the > first > > > author and the year. > > > I cannot find how to convert the data frame to a > > > table so I can use great > > > functions such as prop.table and margin.table. > > > > > > Alas I tried, rowSums but it provides lousy > output > > > without listing the names > > > of th papers. > > > I have thought of going through the reshape > package > > > but I suspect that there > > > is an easier way to convert a data frame to a > table. > > > Is there? > > > > > > -- > > > Farrel Buchinsky > > > > > > > > Be smarter than spam. See how smart SpamGuard > is at giving junk email > > http://mrd.mail.yahoo.com/try_beta?.intl=ca > > > > > > > -- > Farrel Buchinsky > GrandCentral Tel: (412) 567-7870 > ______________________________________________ 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.