![Specify formats when you write vectors to a data set](https://blogs.sas.com/content/iml/files/2014/06/t_mattribformat.png)
Sometimes you have data in SAS/IML vectors that you need to write to a SAS data set. By default, no formats are associated with the variables that you create from SAS/IML vectors. However, some variables (notably dates, times, and datetimes) should have formats associated with the data values. You can