[R] Adding SORT to UNIQUE

Rui Barradas ru|pb@rr@d@@ @end|ng |rom @@po@pt
Mon Dec 20 18:05:33 CET 2021


Package stringr has functions str_sort and str_order, both with an 
argument 'numeric' that will sort the numbers correctly.
Maybe that's what you are looking for, see the example below.

x <- sample(sprintf("ab%d", 1:20))     # shuffle the vector
stringr::str_sort(x, numeric = TRUE)   # sort considering the numbers

Hope this helps,

Rui Barradas

Às 16:58 de 20/12/21, Stephen H. Dawson, DSL via R-help escreveu:
> Hi,
> Running a simple syntax set to review entries in dataframe columns. Here 
> is the working code.
> Data <- read.csv("./input/Source.csv", header=T)
> describe(Data)
> summary(Data)
> unique(Data[1])
> unique(Data[2])
> unique(Data[3])
> unique(Data[4])
> I would like to add sort the unique entries. The data in the various 
> columns are not defined as numbers, but also text. I realize 1 and 10 
> will not sort properly, as the column is not defined as a number, but 
> want to see what I have in the columns viewed as sorted.
> What is the best process to sort unique output, please?
> Thanks.

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