> For the complete documentation index, see [llms.txt](https://fto-2.gitbook.io/fto-indicators-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://fto-2.gitbook.io/fto-indicators-docs/access-to-bar-arrays/volume.md).

# Volume

Returns the volume for a specific bar.

## Syntax

```typescript
Volume(shift: number): number
```

## Parameters

* `shift`: A number representing the shift from the current bar

## Return Value

Returns a `number` representing the trading volume during the specified bar.

## Description

The `Volume` method returns the trading volume for a bar at the specified shift from the current bar. Volume represents the total amount of trading activity during the bar's timeframe. The shift parameter determines which bar's volume to return:

* 0: Current bar
* 1: Previous bar
* 2: Two bars ago
* And so on

## Example

```typescript
// Get current bar's volume
const currentVolume = this.api.Volume(0);

// Get previous bar's volume
const previousVolume = this.api.Volume(1);

// Calculate average volume over last 3 bars
let totalVolume = 0;
for (let i = 0; i < 3; i++) {
  totalVolume += this.api.Volume(i);
}
const averageVolume = totalVolume / 3;
console.log(`Average volume over last 3 bars: ${averageVolume}`);

// Check for volume spike
if (this.api.Volume(0) > this.api.Volume(1) * 2) {
  console.log("Volume spike detected on current bar");
}
```