I have a data frame (Galton's data on heights of parents and children), in grouped form,
parent child frequency 73.5 72.2 1 73.5 73.2 3 72.5 68.2 1 72.5 69.2 2 72.5 70.2 1 72.5 71.2 2 72.5 72.2 7 72.5 73.2 2 72.5 74.2 4 71.5 65.2 1 71.5 66.2 3 71.5 67.2 4 71.5 68.2 3 71.5 69.2 5 71.5 70.2 10 ...
and need the ungrouped equivalent, where each input observation appears the number of times represented by its frequency. In SAS this would be
data galton2;
set galton;
do i=1 to frequency;
output;
end;I can replicate this in R, but surely there must be an easier way. (In APL2 it would be frequency\[1]galton)
thanks, -Michael
--
Michael Friendly Email: [EMAIL PROTECTED] Professor, Psychology Dept.
York University Voice: 416 736-5115 x66249 Fax: 416 736-5814
4700 Keele Street http://www.math.yorku.ca/SCS/friendly.html
Toronto, ONT M3J 1P3 CANADA
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