| CasesTable | Create reports cases after listwise deletion of missing... |
| change | Calculate the changes (absolute, percent, and proportion)... |
| CountSpell | Count spells, including for grouped data |
| dMerge | Merges 2 data frames and report/drop/keeps only duplicates. |
| DropNA | Drop rows from a data frame with missing values on a given... |
| FillDown | Fills in missing (NA) values with the previous non-missing... |
| FillIn | A function for filling in missing values of a variable from... |
| FindDups | Find duplicated values in a data frame and subset it to... |
| FindReplace | Replace multiple patterns found in a character string column... |
| grepl.sub | Subset a data frame if a specified pattern is found in a... |
| InsertRow | Inserts a new row into a data frame |
| MoveFront | Move variables to the front of a data frame. |
| NaVar | Create new variable(s) indicating if there are missing values... |
| PercChange | Calculate the percentage change from a specified lag,... |
| pull | Extract a single column from a data frame (including tbl_df)... |
| rmExcept | Remove all objects from a workspace except those specified by... |
| shift | A function for creating lag and lead variables. |
| shiftMA | Internal function for slideMA |
| slide | A function for creating lag and lead variables, including for... |
| slideMA | Create a moving average for a period before or after each... |
| SpreadDummy | Spread a dummy variable (1's and 0') over a specified time... |
| StartEnd | Find the starting and ending time points of a spell |
| TimeExpand | Expands a data set so that it includes an observation for... |
| TimeFill | Creates a continuous Unit-Time-Dummy data frame from a data... |
| VarDrop | Drop one or more variables from a data frame. |
