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) | ||
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
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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