# Find First Index Lowest (FINDFIRSTINDEXLOWEST)

> QuantNexus indicator page for first-lowest index lookup.

**Route**: `/quantnexus/indicators/findfirstindexlowest/`

## What It Does

FINDFIRSTINDEXLOWEST returns the first bar index where the lowest value occurs inside the lookback window.

## Formula

Return the earliest index that matches the minimum value condition in the window.

## Parameters

- `period` - default `14`
- `_evalfunc` - default `low`

## C++23 API

```cpp
#include <nonabt/indicators/findfirstindexlowest.hpp>
auto firstLowIndex = std::make_unique<nonabt::FINDFIRSTINDEXLOWEST>(data(), 14);
```

## Common Usage

- Use it to locate the first trough in a lookback range.
- Combine with reversal and support logic.
- Helpful when the first bottom matters.