# Vortex (VORTEX)

> QuantNexus indicator page for directional trend crossover analysis.

**Route**: `/quantnexus/indicators/vortex/`

## What It Does

VORTEX compares positive and negative directional movement to estimate trend direction and strength.

## Formula

`VI+` and `VI-` are built from directional movement normalized by true range.

## Parameters

- `period` - default `14`

## C++23 API

```cpp
#include <nonabt/indicators/vortex.hpp>
auto vortex = std::make_unique<nonabt::VORTEX>(data().close(), 14);
```

## Common Usage

- Use it as a crossover-style trend filter.
- Pair it with breakout rules or directional confirmation.
- Helpful for distinguishing trend continuation from range noise.