+++
# -----------------------------------------------------------------------
# Do not edit this file. It is automatically generated by API Documenter.
# -----------------------------------------------------------------------
title = "AppendedVectors"
keywords = ["grafana","documentation","sdk","@grafana/data"]
type = "docs"
+++
## AppendedVectors class
This may be more trouble than it is worth. This trades some computation time for RAM -- rather than allocate a new array the size of all previous arrays, this just points the correct index to their original array values
Signature
```typescript
export declare class AppendedVectors implements Vector
```
Import
```typescript
import { AppendedVectors } from '@grafana/data';
```
Constructors
| Constructor | Modifiers | Description |
| --- | --- | --- |
| [constructor(startAt)](#constructor-startat) | | Constructs a new instance of the AppendedVectors class |
Properties
| Property | Modifiers | Type | Description |
| --- | --- | --- | --- |
| [length](#length-property) | | number | |
| [source](#source-property) | | Array<AppendedVectorInfo<T>> | |
Methods
| Method | Modifiers | Description |
| --- | --- | --- |
| [append(v)](#append-method) | | |
| [get(index)](#get-method) | | |
| [setLength(length)](#setlength-method) | | Make the vector look like it is this long |
| [toArray()](#toarray-method) | | |
| [toJSON()](#tojson-method) | | |
### constructor(startAt)
Constructs a new instance of the `AppendedVectors` class
Signature
```typescript
constructor(startAt?: number);
```
Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| startAt | number | |
### length property
Signature
```typescript
length: number;
```
### source property
Signature
```typescript
source: Array>;
```
### append method
Signature
```typescript
append(v: Vector): AppendedVectorInfo;
```
Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| v | Vector<T> | |
Returns:
`AppendedVectorInfo`
### get method
Signature
```typescript
get(index: number): T;
```
Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| index | number | |
Returns:
`T`
### setLength method
Make the vector look like it is this long
Signature
```typescript
setLength(length: number): void;
```
Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| length | number | |
Returns:
`void`
### toArray method
Signature
```typescript
toArray(): T[];
```
Returns:
`T[]`
### toJSON method
Signature
```typescript
toJSON(): T[];
```
Returns:
`T[]`