Sort data frame by variable(s) {epicalc} | R Documentation |
Sort the whole dataset by one or more variables
sortBy(..., dataFrame = .data)
... |
index variable(s) used for sorting |
dataFrame |
Destination data frame where all variables of the same length are sorted |
The whole dataset, and the variables outside, can be sorted by an index variable(s) inside the (...).
Virasakdi Chongsuvivatwong <cvirasak@medicine.psu.ac.th>
'sort', 'order'
sbp <- c(120, 100, 110, 120, 140, 120, NA, NA) dbp <- c( 80, 80, 70, 80, 70, NA, 70, 60) .data <- data.frame(sbp, dbp) use(.data) age <- c(37, 32, 24, 33, 31, 30, 26, 25) age2 <- age^2 sortBy(age) pack() des() .data sortBy(age, decreasing=TRUE) .data ## Note that the argument of 'sortBy' must not be concatenated vectors data(Familydata) use(Familydata) .data sortBy(money, sex) # correct .data use(Familydata) # Read in the dataset afresh sortBy(c(money, sex)) # errors. .data