# Confirmed pivot low (`ta.pivotlow`)



<a id="ta-pivotlow"></a>

Output the low, original position, and confirmation position after the right window completes; do not backfill the original low.

[Indicator catalog](https://docs.openbacktesting.com/reference/indicators/index.md) · [How to use indicators](https://docs.openbacktesting.com/reference/indicator-api/index.md)

## Run this example

This complete script uses bundled data. It observes the selected output without placing trades.

```python
import numpy as np
from openbacktesting import Backtest, Strategy
from openbacktesting.test import GOOG

data = GOOG.copy()

class Example(Strategy):
    def init(self):
        self.value = self.ta.pivotlow()
        self.latest_value = None

    def next(self):
        channel = self.value.value
        if channel.valid[-1]:
            self.latest_value = float(channel[-1])

result = Backtest(data, Example).run()
print(result["_strategy"].latest_value)
```

## Call and parameters

```python
self.ta.pivotlow(source=None, *, left=2, right=2, inputs=None, backend=None, required_outputs=None)
```

Register in `init()`. Read the returned channel in `next()` after checking `valid[-1]`.

| Parameter | Meaning | Type | Default | Allowed values |
| --- | --- | --- | --- | --- |
| `left` | Earlier bars on the left of a pivot candidate. | `int` | `2` | Minimum: `1`; Maximum: `100000` |
| `right` | Later bars required to confirm a pivot candidate. | `int` | `2` | Minimum: `1`; Maximum: `100000` |

`source`/named source arguments accept a column name or same-run single-channel handle. Alternatively, `inputs` maps each input below to a column or handle. `backend` selects a supported implementation; `required_outputs` selects channels for readiness diagnostics. See [shared arguments and handles](https://docs.openbacktesting.com/reference/indicator-api/index.md#bind-inputs-and-read-outputs).

## Inputs and outputs

Required inputs: `low`.

| Channel | Meaning |
| --- | --- |
| `value` | Confirmed pivot price |
| `pivot_bar` | Zero-based position of the earlier extreme |
| `confirmed_at` | Zero-based confirmation bar |

## Reading values safely

Insufficient history or missing inputs can make a channel invalid. Check that channel's `valid` mask; `ready` is diagnostic and never suppresses `next()`. Multi-output results may have different valid channels on the same bar.

The pivot is published on its confirmation bar after `right` later bars, not backdated to the extreme. Ties choose the rightmost extreme.

[Indicator catalog](https://docs.openbacktesting.com/reference/indicators/index.md) · [Custom calculations](https://docs.openbacktesting.com/reference/strategy/index.md#register-custom-calculations)