I am working in a dataframe that looks something like this:
vims <- data.frame( Name_ID = c("a", "a", "a", "b", "b"), Date = c(2020, 2020, 2018, 2020, 2028), Eye = c("Right", "Left", "Right", "Right", "Right"), V1 = c(21, 18, 30, 30, 18) )
As you can see, the data has an ID and may have several evaluation on different date for that same ID and further it may have different eye evaluations. I am trying to merge rows in order to be arrange by ID and date to obtain rows that contains the ID, the date and all the info for every eye in the same row.
I found a similar situation here: Merging rows based on values in two columns? - #2 by sergio.costa
But when I run the code I obtained the following error:
> vims %>% + group_by(patient_id, exam_date) %>% + summarise(across(c(eye:centralax), sum, na.rm = TRUE)) Error: Problem with `summarise()` input `..1`. ℹ `..1 = across(c(eye:centralax), sum, na.rm = TRUE)`. x invalid 'type' (character) of argument ℹ The error occurred in group 1: patient_id = "EYE00043", exam_date = "17.05.2018".