The second example shows how to order the rows of a data frame by one of its columns. – 10) is the lowest value of our example vector.Įxample 2: Order Data Frame Rows by Column Vector For a classed R object, the sort order is taken from xtfrm : as its help page. 4) is the third lowest and the second element (i.e. See the examples for how to use these functions to sort data frames, etc. Recode values Source: R/recode.R recode () is superseded in favor of casematch (), which handles the most important cases of recode () with a more elegant interface. As you can see in Figure 1, the first input element (i.e. The R programming language is a powerful open source and free software. 8) is located at position three within our example vector.ĭefinition of rank() R function: The rank function returns the ranking position of its input. 10) is located at position two and the highest value (i.e. Sorting a vector in descending order means ordering the elements from higher to lower. As you can see in Figure 1, the lowest value (i.e. 8) was returned last.ĭefinition of order() R function: The order function returns the position of each element of its input in ascending or descending order. 10) of our example vector was returned first and the highest value (i.e. )) The following example show how to use this function in practice. Fortunately this is easy to do using the following syntax: factorvariable <- factor(factorvariable, levelsc ('this', 'that', 'those'. As you can see in Figure 1, the lowest value (i.e. Occasionally you may want to re-order the levels of some factor variable in R. However, the output of each function is different.įigure 1 illustrates the functioning of the sort, order, and rank functions:įigure 1: Comparison of sort, order & rank Functions in R.ĭefinition of sort() R function: The sort function returns its input in ascending or descending order. The basic R syntax of the three functions is the same. Release notes Docs Forums EN English Français RCode is an IDE for R and Python. /rebates/2ftutorial2fsorting-in-r&. Rank (x ) # Apply rank function # 3 1 4 2 RCode is a powerful and modern IDE for developing in R.
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