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popdata
2012 Oct 16
2
unique
Hello everybody,
I've got a problem concerning the function unique. I have got a
data.frame "shopdata" with 1000 shop which were evaluated at different
points in time.
With function subset I chose those shops with more then 10 employee and
store it in data.frame "bigshopdata" with 700 shops.
bigshopdata=subset(shopdata, shopdata$employee>10)
Now I use unique(bigshopdata$name...