Most voted "tapply" questions
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5
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answers651
viewsHow to perform the tapply function for multiple dataframes in R?
I wish to perform only ONE function tapply and get results for each of the dataframes at once: dataset1<-data.frame(group = rep(c('a','b','c','d'), 3, each = 3), number1 = c(1:36), number2 =…
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2
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answers151
viewsPerform the tapply function for multiple variables on a dataframe (with pairwise.t.test)
I try to perform the function tapply for several variables at the same time, but using the function pairwise.t.test. However, I do not succeed. So I have to do this:…
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votes1
answer29
viewsWrong result when averaging per group
I am very beginner in R and am working on a large data.frame (approx 300000 data) that follows the example below: Identification Dates TEMP_Celcius 1 LONNIE POOL FIELD WEAVERVILLE 2014-01-01 13.0 2…