Class: LambertGrid

Defined in: grids/LambertGrid.ts:19

A Lambert conformal conic grid with uniform grid spacing

Plot Component Compatibility

• ✅ Fill
• ✅ Raster
• ✅ Contour
• ✅ Paintball
• ✅ Barbs
• ✅ Hodographs
• ✅ StationPlot

Extends

• AutoZoomGridIntf & GridCoordinateIntf & StructuredGrid<this>

Constructors

Constructor

new LambertGrid(ni, nj, lon_0, lat_0, lat_std, ll_x, ll_y, ur_x, ur_y, a?, b?, thin_x?, thin_y?): LambertGrid

Defined in: grids/LambertGrid.ts:46

Create a Lambert conformal conic grid from the lower-left and upper-right corner x/y values.

Parameters

Parameter	Type	Description
ni	number	The number of grid points in the i (longitude) direction
nj	number	The number of grid points in the j (latitude) direction
lon_0	number	The standard longitude for the projection; this is also the center longitude for the projection
lat_0	number	The center latitude for the projection
lat_std	[number, number]	The standard latitudes for the projection
ll_x	number	The x coordinate in projection space of the lower-left corner of the grid
ll_y	number	The y coordinate in projection space of the lower-left corner of the grid
ur_x	number	The x coordinate in projection space of the upper-right corner of the grid
ur_y	number	The y coordinate in projection space of the upper-right corner of the grid
a?	number	The semimajor axis of the assumed shape of Earth in meters
b?	number	The semiminor axis of the assumed shape of Earth in meters
thin_x?	number	-
thin_y?	number	-

Returns

LambertGrid

Overrides

autoZoomGridMixin(gridCoordinateMixin(StructuredGrid)).constructor

Properties

Property	Modifier	Type	Inherited from	Defined in
a	readonly	number	-	grids/LambertGrid.ts:27
b	readonly	number	-	grids/LambertGrid.ts:28
is_conformal	readonly	boolean	autoZoomGridMixin(gridCoordinateMixin(StructuredGrid)).is_conformal	grids/Grid.ts:23
lat_0	readonly	number	-	grids/LambertGrid.ts:21
lat_std	readonly	[number, number]	-	grids/LambertGrid.ts:22
ll_x	readonly	number	-	grids/LambertGrid.ts:23
ll_y	readonly	number	-	grids/LambertGrid.ts:24
lon_0	readonly	number	-	grids/LambertGrid.ts:20
ni	readonly	number	autoZoomGridMixin(gridCoordinateMixin(StructuredGrid)).ni	grids/Grid.ts:21
nj	readonly	number	autoZoomGridMixin(gridCoordinateMixin(StructuredGrid)).nj	grids/Grid.ts:22
thin_x	readonly	number	autoZoomGridMixin(gridCoordinateMixin(StructuredGrid)).thin_x	grids/StructuredGrid.ts:34
thin_y	readonly	number	autoZoomGridMixin(gridCoordinateMixin(StructuredGrid)).thin_y	grids/StructuredGrid.ts:35
type	readonly	GridType	autoZoomGridMixin(gridCoordinateMixin(StructuredGrid)).type	grids/Grid.ts:20
ur_x	readonly	number	-	grids/LambertGrid.ts:25
ur_y	readonly	number	-	grids/LambertGrid.ts:26

Methods

getDomainBuffers()

getDomainBuffers(gl): Promise<DomainBuffers>

Defined in: grids/DomainBuffer.ts:9

Parameters

Parameter	Type
gl	WebGLAnyRenderingContext

Returns

Promise<DomainBuffers>

Inherited from

autoZoomGridMixin(gridCoordinateMixin(StructuredGrid)).getDomainBuffers

---

getEarthCoords()

getEarthCoords(ni?, nj?, which_i?, which_j?): EarthCoords

Defined in: grids/GridCoordinates.ts:8

Parameters

Parameter	Type
ni?	number
nj?	number
which_i?	GridElement
which_j?	GridElement

Returns

EarthCoords

Inherited from

autoZoomGridMixin(gridCoordinateMixin(StructuredGrid)).getEarthCoords

---

getGridCoords()

getGridCoords(): GridCoords

Defined in: grids/GridCoordinates.ts:9

Returns

GridCoords

Inherited from

autoZoomGridMixin(gridCoordinateMixin(StructuredGrid)).getGridCoords

---

getMinVisibleZoom()

getMinVisibleZoom(thin_fac): Uint8Array

Defined in: grids/AutoZoom.ts:56

Parameters

Parameter	Type
thin_fac	number

Returns

Uint8Array

Inherited from

autoZoomGridMixin(gridCoordinateMixin(StructuredGrid)).getMinVisibleZoom

---

getVectorRotationAtPoint()

getVectorRotationAtPoint(lon, lat): number

Defined in: grids/AutoZoom.ts:55

Parameters

Parameter	Type
lon	number
lat	number

Returns

number

Inherited from

autoZoomGridMixin(gridCoordinateMixin(StructuredGrid)).getVectorRotationAtPoint

---

getVectorRotationTexture()

getVectorRotationTexture(gl, data_are_earth_relative): object

Defined in: grids/AutoZoom.ts:54

Parameters

Parameter	Type
gl	WebGLAnyRenderingContext
data_are_earth_relative	boolean

Returns

object

rotation

rotation: WGLTexture

Inherited from

autoZoomGridMixin(gridCoordinateMixin(StructuredGrid)).getVectorRotationTexture

---

getWGLBillboardBuffers()

getWGLBillboardBuffers(gl, thin_fac, max_zoom): Promise<{ texcoords: WGLBuffer; vertices: WGLBuffer; }>

Defined in: grids/AutoZoom.ts:53

Parameters

Parameter	Type
gl	WebGLAnyRenderingContext
thin_fac	number
max_zoom	number

Returns

Promise<{ texcoords: WGLBuffer; vertices: WGLBuffer; }>

Inherited from

autoZoomGridMixin(gridCoordinateMixin(StructuredGrid)).getWGLBillboardBuffers

---

makeDomainBuffers()

protected makeDomainBuffers(gl): Promise<{ texcoords: WGLBuffer; vertices: WGLBuffer; }>

Defined in: grids/StructuredGrid.ts:105

Parameters

Parameter	Type
gl	WebGLAnyRenderingContext

Returns

Promise<{ texcoords: WGLBuffer; vertices: WGLBuffer; }>

Inherited from

autoZoomGridMixin(gridCoordinateMixin(StructuredGrid)).makeDomainBuffers

---

sampleNearestGridPoint()

sampleNearestGridPoint(lon, lat, ary): object

Defined in: grids/StructuredGrid.ts:111

Parameters

Parameter	Type
lon	number
lat	number
ary	TypedArray

Returns

object

sample

sample: number

sample_lat

sample_lat: number

sample_lon

sample_lon: number

Inherited from

autoZoomGridMixin(gridCoordinateMixin(StructuredGrid)).sampleNearestGridPoint

---

setupCoordinateCaches()

setupCoordinateCaches(start_i, end_i, start_j, end_j): void

Defined in: grids/GridCoordinates.ts:7

Parameters

Parameter	Type
start_i	number
end_i	number
start_j	number
end_j	number

Returns

void

Inherited from

autoZoomGridMixin(gridCoordinateMixin(StructuredGrid)).setupCoordinateCaches

---

thinnedGridParameters()

protected thinnedGridParameters(thin_fac, map_max_zoom, ll_x, ll_y, ur_x, ur_y): object

Defined in: grids/StructuredGrid.ts:55

Parameters

Parameter	Type
thin_fac	number
map_max_zoom	number
ll_x	number
ll_y	number
ur_x	number
ur_y	number

Returns

object

ll_x

ll_x: number = new_ll_x

ll_y

ll_y: number = new_ll_y

ni

ni: number

nj

nj: number

thin_x

thin_x: number

thin_y

thin_y: number

ur_x

ur_x: number = new_ur_x

ur_y

ur_y: number = new_ur_y

Inherited from

autoZoomGridMixin(gridCoordinateMixin(StructuredGrid)).thinnedGridParameters

---

fromLLCornerLonLat()

static fromLLCornerLonLat(ni, nj, lon_0, lat_0, lat_std, ll_lon, ll_lat, dx, dy, a?, b?): LambertGrid

Defined in: grids/LambertGrid.ts:79

Create a Lambert conformal conic grid from the lower-left grid point coordinate and a dx and dy.

Parameters

Parameter	Type	Description
ni	number	The number of grid points in the i (longitude) direction
nj	number	The number of grid points in the j (latitude) direction
lon_0	number	The standard longitude for the projection; this is also the center longitude for the projection
lat_0	number	The center latitude for the projection
lat_std	[number, number]	The standard latitudes for the projection
ll_lon	number	The longitude of the lower-left corner of the grid
ll_lat	number	The latitude of the lower-left corner of the grid
dx	number	The grid dx in meters
dy	number	The grid dy in meters
a?	number	The semimajor axis of the assumed shape of Earth in meters
b?	number	The semiminor axis of the assumed shape of Earth in meters

Returns

LambertGrid