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grafana/docs/sources/packages_api/data/appendedvectors.md
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# -----------------------------------------------------------------------
# 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
<b>Signature</b>
```typescript
export declare class AppendedVectors<T = any> implements Vector<T>
```
<b>Import</b>
```typescript
import { AppendedVectors } from '@grafana/data';
```
<b>Constructors</b>
| Constructor | Modifiers | Description |
| --- | --- | --- |
| [constructor(startAt)](#constructor-startat) | | Constructs a new instance of the <code>AppendedVectors</code> class |
<b>Properties</b>
| Property | Modifiers | Type | Description |
| --- | --- | --- | --- |
| [length](#length-property) | | <code>number</code> | |
| [source](#source-property) | | <code>Array&lt;AppendedVectorInfo&lt;T&gt;&gt;</code> | |
<b>Methods</b>
| 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
<b>Signature</b>
```typescript
constructor(startAt?: number);
```
<b>Parameters</b>
| Parameter | Type | Description |
| --- | --- | --- |
| startAt | <code>number</code> | |
### length property
<b>Signature</b>
```typescript
length: number;
```
### source property
<b>Signature</b>
```typescript
source: Array<AppendedVectorInfo<T>>;
```
### append method
<b>Signature</b>
```typescript
append(v: Vector<T>): AppendedVectorInfo<T>;
```
<b>Parameters</b>
| Parameter | Type | Description |
| --- | --- | --- |
| v | <code>Vector&lt;T&gt;</code> | |
<b>Returns:</b>
`AppendedVectorInfo<T>`
### get method
<b>Signature</b>
```typescript
get(index: number): T;
```
<b>Parameters</b>
| Parameter | Type | Description |
| --- | --- | --- |
| index | <code>number</code> | |
<b>Returns:</b>
`T`
### setLength method
Make the vector look like it is this long
<b>Signature</b>
```typescript
setLength(length: number): void;
```
<b>Parameters</b>
| Parameter | Type | Description |
| --- | --- | --- |
| length | <code>number</code> | |
<b>Returns:</b>
`void`
### toArray method
<b>Signature</b>
```typescript
toArray(): T[];
```
<b>Returns:</b>
`T[]`
### toJSON method
<b>Signature</b>
```typescript
toJSON(): T[];
```
<b>Returns:</b>
`T[]`