Aster R provides functions to transform data.
This table lists brief descriptions of some of these functions.
| Function | Description |
|---|---|
| Combining data | |
| ta.merge() | Returns a virtual data frame based on a JOIN of two input virtual data frames. |
| ta.join() | Returns a virtual data frame based on a JOIN of two input virtual objects using one or more join keys. |
| ta.cbind() | Returns a virtual data frame combining the columns of the two input data frames. The input data frames must have a row_names column and the same number of rows. |
| ta.rbind() | Returns a virtual data frame that is a UNION of the two input data frames. |
| Ordering data | |
| ta.order() | Returns a virtual data frame ordered as specified by the input parameters. |
| Subsetting data | |
| ta.subset() | Returns a virtual data frame based on the subset criteria specified by the input parameters. |
| Recoding | |
| ta.recode() | Returns a virtual data frame with a specific column updated as specified by the input parameters. |
| Transforming columns | |
| ta.transform() | Returns a virtual data frame with one or more columns updated as specified by the input parameters. |
| ta.with() | Returns the value of a specific expression based on the specified input data frame. |
| ta.within() | Returns a virtual data frame modified by evaluating the specified expression. |