| User Order | Use the ordering specified in the user sort order entered with the
User defined Label/Level Order within a Factor dialog. |
| Compass Points | Use the order of compass points (N, NE, E, etc.) for the labels. |
| Week days | Use the order of Weekdays (Mon, Tue, Wed, etc.) for the labels. |
| Month names (abbreviated) | Use the order of 3 letter month names (Jan, Feb, Mar, etc.) for the labels. |
| Month names (full) | Use the order of full month names (January, February, March, etc.) for the labels. |
| Compass Points | Use order of compass points (N, NE, E, etc.) on the labels. |
| Alphabetical | Use alphabetical sort order on the labels. |
| By Numerical part | Read any number within the label and sort numerically on these. For example the list A2, B1, 0X, Z1.2 will sort to 0X, B1, Z1.2, A2. |
| Numerical suffix | Sort numerically on whole numbers at the start of the label, and then alphabetically on the remainder of the label. For example the alphabetically sorted list 100A, 10A, 10B, 1A, 1B, 20B, 2A, will sort to 1A, 1B, 10A, 10B, 100A, 2A, 20B. |
| Numerical prefix | Sort alphabetically on the letters at the start of the label and then numerically on whole numbers at the end of the label. For example the list A1, A10, A100, A2, A20 will sort to A1, A2, A10, A20, A100. |
| By Levels | Sort numerically using the factor levels. |
| By Frequency | Sort according to the frequency of occurrence of each factor group in the column. |