Describes trends in the value of an attribute.
| Constant | Value | Description |
|---|---|---|
| esriValueIncreases | 1 | The value increases over some intervals. |
| esriValueLevel | 2 | The value remains constant over some intervals. |
| esriValueDecreases | 4 | The value decreases over some intervals. |
| esriValuesEmpty | 8 | There are some gaps in the value, where it is 'empty'. |