> ## Documentation Index
> Fetch the complete documentation index at: https://docs.wandb.ai/llms.txt
> Use this file to discover all available pages before exploring further.
# MetricChangeFilter
export const GitHubLink = ({url}) =>
GitHub source
;
## class `MetricChangeFilter`
Filter that compares a **change** in a metric value to a user-defined threshold.
The change is calculated over "tumbling" windows, i.e. the difference
between the current window and the non-overlapping prior window.
### method `MetricChangeFilter.__init__`
```python theme={null}
__init__(
name: 'str',
agg: 'Agg | None' = None,
window: 'int' = 1,
cmp: 'None' = None,
threshold: 'Annotated | Annotated',
prior_window: 'int' = None,
change_type: 'ChangeType',
change_dir: 'ChangeDir'
) → None
```
**Args:**
* `name` (str):
* `agg` (Optional\[Agg]):
* `window` (int):
* `cmp` (None): Ignored.
* `threshold` (Union\[Annotated, Annotated]):
* `prior_window` (int): Size of the "prior" metric aggregation window (ignored if `agg` is `None`).
If omitted, defaults to the size of the current window.
* `change_type` (ChangeType):
* `change_dir` (ChangeDir):
**Returns:**
An `MetricChangeFilter` object.