[R] Frequency table to histogram

[Luc Villandre]

   Hi Louisa,
   I'm still not entirely sure of what you're trying to do, but I'll attempt an
   answer to your question nevertheless.
   Let's assume that this frequency table was created from a dataset that
   comprised only a single column of "Chest" values. If you want to recreate
   this original column, you'd have to use
   temp1 = rep(temp$Chest,temp$Count) ;
   Then, you could redefine your break points and let the hist() function count
   the number of data entries in each new category.
   Hope this helps,
   Luc
   Mary Winter wrote:

     Hi,

     Sorry, yes that would be a better idea, Luc!
     Here are the first few lines of the frequency table..

     Count Chest
     1      3    33
     2     18    34
     3     81    35
     4    185    36
     5    420    37

     In my previous email I said the sample size was 100, I just meant that as
     an example, obviously it's far greater than that..

     Louisa

     > Date: Tue, 7 Apr 2009 10:00:55 -0400
     > From: [1]villandl at dms.umontreal.ca
     > To: [2]statsstudent at hotmail.com
     > CC: [3]r-help at r-project.org
     > Subject: Re: [R] Frequency table to histogram
     >
     > Hi Mary,
     >
     > Could you please provide a copy of the first few lines of your frequency
     > table (with only relevant columns)? I think this could help many
     > potential contributors understand in more details what you're trying to
     do.
     >
     > Cheers,
     >
     > Luc
     >
     > Mary Winter wrote:
     > >
     > >
     > > I have read a frequency table in to R called "temp." I now want to
     create a histogram table from it, but I obviously first have to expand the
     data - to the sample size of 100. I want to use the command rep(), but I'm
     not sure how to go about it..I tried using the code:
     > >
     > >
     > >
     > > temp1<-rep(temp$Chest,100)
     > >
     > > hist(temp1)
     > >
     > >
     > >
     > > But this creates a v. odd histogram so I know it must be wrong!
     > >
     > >
     > >
     > > Would be very grateful if any one could help me out!
     > >
     > >
     > >
     > > Mary
     > >
     > > _________________________________________________________________
     > >
     > >
     > > [[alternative HTML version deleted]]
     > >
     > > ______________________________________________
     > > [4]R-help at r-project.org mailing list
     > > [5]https://stat.ethz.ch/mailman/listinfo/r-help
     > > PLEASE do read the posting guide
     [6]http://www.R-project.org/posting-guide.html
     > > and provide commented, minimal, self-contained, reproducible code.
     > >
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References

   1. mailto:villandl at dms.umontreal.ca
   2. mailto:statsstudent at hotmail.com
   3. mailto:r-help at r-project.org
   4. mailto:R-help at r-project.org
   5. https://stat.ethz.ch/mailman/listinfo/r-help
   6. http://www.R-project.org/posting-guide.html
   7. http://extras.uk.msn.com/internet-explorer-8/?ocid=T010MSN07A0716U