Enki Wang

Dear developer, There are some very useful functions that deal with the missing value in the package. I wonder there is a chance to develop a function like SAS [`nmiss`](https://documentation.sas.com/doc/en/pgmsascdc/9.4_3.5/lefunctionsref/p0nw8trwk5ooesn1o8zrtd5c6j1t.htm)...

Wrong message `All variables in specification file are in dataset`

3

Dear developer, When I change the input `ADSL` that contains only one variable `STUDYID`, the message `All variables in specification file are in dataset` still be output. I am not...

The below data frame has 3 rows that the end of 2 rows are `NA` and `""`, the output xpt file only keeps the first non missing rows. whether this...

Feature Request: wrong output calling ` xportr_order` with grouped data

1

### Feature Idea Dear developer, when the input data is grouped, the `xportr_order` get wrong results as shown in below example. `adsl %>% group_by(USUBJID)` > Adding missing grouping variables: `USUBJID`...