Conditional filtering of dataframe in R
I wonder how to dplyr::filter() my DATA to catch the rows for IDs whose Language value when 'Type!=5F' and when 'Type==5F' changes from other languages to "English"?
I wonder how to dplyr::filter() my DATA to catch the rows for IDs whose Language value when 'Type!=5F' and when 'Type==5F' changes from other languages to "English"?