Hello,
Inline.
Às 21:18 de 20/12/21, Stephen H. Dawson, DSL via R-help escreveu:
Thanks.
sort(unique(Data[[1]]))
This syntax provides row numbers, not column values.
This is not right.
The syntax Data[1] extracts a sub-data.frame, the syntax Data[[1]]
extracts the column vector.
As for my previous answer, it was not addressing the question, I
misinterpreted it as being a question on how to sort by numeric order
when the data is not numeric. Here is a, hopefully, complete answer.
Still with package stringr.
cols_to_sort <- 1:4
Data2 <- lapply(Data[cols_to_sort], \(x){
stringr::str_sort(unique(x), numeric = TRUE)
})
Or using Avi's suggestion of writing a function to do all the work and
simplify the lapply loop later,
unisort2 <- function(vec, ...) stringr::str_sort(unique(vec), ...)
Data2 <- lapply(Data[cols_to_sort], unisort, numeric = TRUE)
Hope this helps,
Rui Barradas
*Stephen Dawson, DSL*
/Executive Strategy Consultant/
Business & Technology
+1 (865) 804-3454
http://www.shdawson.com <http://www.shdawson.com>
On 12/20/21 11:58 AM, Stephen H. Dawson, DSL via R-help wrote:
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.
QUESTION
What is the best process to sort unique output, please?
Thanks.
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