[R] working with summarized data

Thomas Lumley tlumley at u.washington.edu
Wed Aug 30 19:00:51 CEST 2006

On Wed, 30 Aug 2006, Rick Bischoff wrote:

>>> Unfortunately, it seems that most(all?) of R's graphics and summary
>>> statistic functions don't take a weight or frequency argument.
>>> (Fortunately the models do...)
>> I have been been meaning to add this functionality to my graphics
>> package ggplot (http://had.co.nz/ggplot), but unfortunately haven't
>> had time yet.  I'm guessing you want something like:
>> * scatterplot: scale size of point according to weight (can do)
>> * bar chart: bars should have height proportional to weight (can do)
>> * histogram: area proportion to weighting variable (have some half
>> finished code to do)
>> * smoothers: should automatically use weights
>> * boxplot: use weighted quantiles/letter statistics (is there a
>> function for that?)
>> What else is there?
> densityplot is the only other one I can think of at the moment...
> With the rest of those, I could certainly live without it though!

Density plots, scatterplot smoothers, hexbin plots, bubble plots, 
histograms, and boxplots are available in the survey package. These are 
probability-weighted rather than frequency-weighted but it doesn't matter 
for graphics.  You could use them as is (which requires setting up a 
survey design object) or rip the internals out of them.


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