you haveto subset a data frame using as criteria the exact match of a vector content.
you have a dataset with some attributes, and you have a vector with some values of one of the attributes. You want to make a filter based on the values in the vector.
Example: sales records, each record is a deal.
The vector is a list of selected customers you are interested in.
Is it possible to make such a kind of filter?
Of course it is!
you just have to use the %in% operator.
let’s see how to do it in the short tutorial here below.
suppose you have a sales data frame object like this:
suppose you want to extract sales to Francesca, Tommaso and Gianna.
first, you have to assign those names to a vector.
vector = c(“Francesca","Tommaso","Gianna")
then, you can write the filtering statement, using the_%in%_operator.
query_result = sales[sales$customer %in% vector,]
and that’s it!
The meaning of _%in%_operator is exactly the one you guess:
“ select only values present INthe specified group”.
Full code is available as an R workbook for quick reference:
Let me know if you use any other method to obtain the same result.
Finally,if you enjoyed the tutorial, you can find more tutorial on pageTutorial(quite obvious, isnt’ it?).