Class: Field ¶

Table of contents ¶

Constructors ¶

constructor

Properties ¶

Methods ¶

Constructors ¶

constructor ¶

• new Field(params): Field

Parameters ¶

Name	Type
`params`	`IField`

Returns ¶

Field

Defined in ¶

Field.ts:106

Properties ¶

grid ¶

• grid: (null | Vector)[][]

Defined in ¶

Field.ts:102

range ¶

• range: undefined | (undefined | number)[]

Defined in ¶

Field.ts:103

Methods ¶

buildGrid ¶

▸ buildGrid(): (null | Vector)[][]

Returns ¶

(null | Vector)[][]

Defined in ¶

Field.ts:163

release ¶

▸ release(): void

release data

Returns ¶

void

Defined in ¶

Field.ts:190

extent ¶

▸ extent(): number[]

grib data extent 格点数据范围

Returns ¶

number[]

Defined in ¶

Field.ts:198

calculateRange ¶

▸ calculateRange(): undefined | any[]

calculate vector value range

Returns ¶

undefined | any[]

Defined in ¶

Field.ts:237

contains ¶

▸ contains(lon, lat): any

Parameters ¶

Name	Type
`lon`	`number`
`lat`	`number`

Returns ¶

any

Defined in ¶

Field.ts:299

getDecimalIndexes ¶

▸ getDecimalIndexes(lon, lat): number[]

获取经纬度所在的位置索引

Parameters ¶

Name	Type
`lon`	`number`
`lat`	`number`

Returns ¶

number[]

Defined in ¶

Field.ts:323

valueAt ¶

▸ valueAt(lon, lat): null | Vector

Nearest value at lon-lat coordinates 线性插值

Parameters ¶

Name	Type
`lon`	`number`
`lat`	`number`

Returns ¶

null | Vector

Defined in ¶

Field.ts:340

interpolatedValueAt ¶

▸ interpolatedValueAt(lon, lat): null | Vector

Get interpolated grid value lon-lat coordinates 双线性插值

Parameters ¶

Name	Type
`lon`	`number`
`lat`	`number`

Returns ¶

null | Vector

Defined in ¶

Field.ts:367

hasValueAt ¶

▸ hasValueAt(lon, lat): boolean

Parameters ¶

Name	Type
`lon`	`number`
`lat`	`number`

Returns ¶

boolean

Defined in ¶

Field.ts:382

valueAtIndexes ¶

▸ valueAtIndexes(i, j): null | Vector

Value for grid indexes

Parameters ¶

Name	Type	Description
`i`	`number`	column index (integer)
`j`	`number`	row index (integer)

Returns ¶

null | Vector

Defined in ¶

Field.ts:506

lonLatAtIndexes ¶

▸ lonLatAtIndexes(i, j): number[]

Lon-Lat for grid indexes

Parameters ¶

Name	Type	Description
`i`	`number`	column index (integer)
`j`	`number`	row index (integer)

Returns ¶

number[]

[lon, lat]

Defined in ¶

Field.ts:516

randomize ¶

▸ randomize(o?, width, height, unproject): IPosition

生成粒子位置

Parameters ¶

Name	Type
`o`	`IPosition`
`width`	`number`
`height`	`number`
`unproject`	(`a`: `number`[]) => `null` \| [`number`, `number`]

Returns ¶

IPosition

IPosition

Defined in ¶

Field.ts:555

checkFields ¶

▸ checkFields(): boolean

判断是否是 Field 的实例

Returns ¶

boolean

boolean

Defined in ¶

Field.ts:580