@windy/interpolator

Return raw meteorological values for given lat, lon or screen X,Y by interpolation of already loaded data tiles.

Once you get interpolation function, you get your data fast, but they are still interpolated non precise values.

For conversion to your desired metric, use metrics module.

Example

import { getLatLonInterpolator } from '@windy/interpolator';

const interpolator = await getLatLonInterpolator();

if (interpolator) {
   const values = interpolator({ lat: 50, lon: 14 });
   // --> can be [number, number, number] or null | undefined | number based on given renderer
}

Table of contents

Type Aliases

• CoordsInterpolationFun
• InterpolatorFactory
• InterpolatorPossibleReturns
• PixelInterpolationFun
• RGBNumValues

Functions

• getLatLonInterpolator
• getXYInterpolator

Type Aliases

CoordsInterpolationFun

Ƭ CoordsInterpolationFun: <T>(latLon: T) => InterpolatorPossibleReturns

Interpolates coordinates to tuple weather values from RGB channels

Type declaration

▸ <T>(latLon): InterpolatorPossibleReturns

Type parameters

Name	Type
T	extends LatLon

Parameters

Name	Type
latLon	T

Returns

InterpolatorPossibleReturns

---

InterpolatorFactory

Ƭ InterpolatorFactory: Object

Type declaration

Name	Type
createFun	(cb: <T>(...args: unknown[]) => T | void) => void

---

InterpolatorPossibleReturns

Ƭ InterpolatorPossibleReturns: RGBNumValues | null | undefined | number

Possible returns from interpolator

null - out of map

NaN - no data value

-1 - not suitable renderer

[number,number,number] - computed values

---

PixelInterpolationFun

Ƭ PixelInterpolationFun: (x: number, y: number, mercXpx?: number, mercYpx?: number) => InterpolatorPossibleReturns

Interpolates pixel to tuple weather values from RGB channels

Type declaration

▸ (x, y, mercXpx?, mercYpx?): InterpolatorPossibleReturns

Parameters

Name	Type
x	number
y	number
mercXpx?	number
mercYpx?	number

Returns

InterpolatorPossibleReturns

---

RGBNumValues

Ƭ RGBNumValues: [NumValue, NumValue, NumValue]

Returned values in data RGB channels as tuple [NumValue, NumValue, NumValue]

Functions

getLatLonInterpolator

▸ getLatLonInterpolator(): Promise<CoordsInterpolationFun>

Returns a Promise, that resolves with an lat lon interpolation function for given map view, or null if no suitable renderer with interpolator is found.

Always resolves, never rejects.

Returns

Promise<CoordsInterpolationFun>

---

getXYInterpolator

▸ getXYInterpolator(): Promise<PixelInterpolationFun>

Returns a Promise, that resolves with an X,Y interpolation function for given map view, or null if no suitable renderer with interpolator is found.

Always resolves, never rejects.

Returns

Promise<PixelInterpolationFun>