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. |