# Zero Lag Indicator (ZLINDICATOR)

> QuantNexus indicator page for an error-correcting trend baseline.

**Route**: `/quantnexus/indicators/zlindicator/`

## What It Does

ZLINDICATOR smooths price with an error-correcting style adjustment that aims to reduce lag.

## Formula

The series follows an adjusted moving average that reacts faster than a plain EMA.

## Parameters

- `period` - default `30`
- `gainlimit` - default `50`
- `_movav` - default `EMA`

## C++23 API

```cpp
#include <nonabt/indicators/zlindicator.hpp>
auto zlIndicator = std::make_unique<nonabt::ZLINDICATOR>(data().close(), 30, 50, "EMA");
```

## Common Usage

- Use it as a low-lag trend baseline.
- Pair it with price crossovers or envelope logic.
- Helpful when you want lag reduction without a fully custom filter.