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MutableDataFrame class
Signature
export declare class MutableDataFrame<T = any> extends FunctionalVector<T> implements DataFrame, MutableVector<T> Import
import { MutableDataFrame } from '@grafana/data';Constructors
| Constructor | Modifiers | Description |
|---|---|---|
| constructor(source, creator) | Constructs a new instance of the MutableDataFrame class |
Properties
| Property | Modifiers | Type | Description |
|---|---|---|---|
| fields | MutableField[] | ||
| length | number | ||
| meta | QueryResultMeta | ||
| name | string | ||
| refId | string |
Methods
| Method | Modifiers | Description |
|---|---|---|
| add(value) | Add values from an object to corresponding fields. Similar to appendRow but does not create new fields. | |
| addField(f, startLength) | ||
| addFieldFor(value, name) | ||
| appendRow(row) | This will add each value to the corresponding column | |
| get(idx) | Get an object with a property for each field in the DataFrame | |
| reverse() | Reverse all values | |
| set(index, value) | ||
| setParser(field, parser) | ||
| toJSON() | The simplified JSON values used in JSON.stringify() | |
| validate() |
constructor(source, creator)
Constructs a new instance of the MutableDataFrame class
Signature
constructor(source?: DataFrame | DataFrameDTO, creator?: MutableVectorCreator);Parameters
| Parameter | Type | Description |
|---|---|---|
| source | DataFrame | DataFrameDTO | |
| creator | MutableVectorCreator |
fields property
Signature
fields: MutableField[];length property
Signature
get length(): number;meta property
Signature
meta?: QueryResultMeta;name property
Signature
name?: string;refId property
Signature
refId?: string;add method
Add values from an object to corresponding fields. Similar to appendRow but does not create new fields.
Signature
add(value: T): void;Parameters
| Parameter | Type | Description |
|---|---|---|
| value | T |
Returns:
void
addField method
Signature
addField(f: Field | FieldDTO, startLength?: number): MutableField;Parameters
| Parameter | Type | Description |
|---|---|---|
| f | Field | FieldDTO | |
| startLength | number |
Returns:
MutableField
addFieldFor method
Signature
addFieldFor(value: any, name?: string): MutableField;Parameters
| Parameter | Type | Description |
|---|---|---|
| value | any | |
| name | string |
Returns:
MutableField
appendRow method
This will add each value to the corresponding column
Signature
appendRow(row: any[]): void;Parameters
| Parameter | Type | Description |
|---|---|---|
| row | any[] |
Returns:
void
get method
Get an object with a property for each field in the DataFrame
Signature
get(idx: number): T;Parameters
| Parameter | Type | Description |
|---|---|---|
| idx | number |
Returns:
T
reverse method
Reverse all values
Signature
reverse(): void;Returns:
void
set method
Signature
set(index: number, value: T): void;Parameters
| Parameter | Type | Description |
|---|---|---|
| index | number | |
| value | T |
Returns:
void
setParser method
Signature
setParser(field: Field, parser: (v: string) => any): (v: string) => any;Parameters
| Parameter | Type | Description |
|---|---|---|
| field | Field | |
| parser | (v: string) => any |
Returns:
(v: string) => any
toJSON method
The simplified JSON values used in JSON.stringify()
Signature
toJSON(): DataFrameDTO;Returns:
DataFrameDTO
validate method
Signature
validate(): void;Returns:
void
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