GlobalGridLayer

The GlobalGridLayer renders filled and/or stroked polygons based on the specified DGGS geospatial indexing system.

GlobalGridLayer is a CompositeLayer.

JavaScript
TypeScript
React

import {Deck} from '@deck.gl/core';
import {GlobalGridLayer, A5Decoder} from '@deck.gl/geo-layers';

const layer = new SGGSLayer({
  id: 'GlobalGridLayer',
  data: 'https://raw.githubusercontent.com/visgl/deck.gl-data/master/website/sf.bike.parking.a5.json',
  globalGrid: A5Decoder,

  extruded: true,
  getPentagon: f => f.pentagon,
  getFillColor: f => {
    const value = f.count / 211;
    return [(1 - value) * 235, 255 - 85 * value, 255 - 170 * value];
  },
  getElevation: f => f.count,
  elevationScale: 10,
  pickable: true
});

new Deck({
  initialViewState: {
    longitude: -122.4,
    latitude: 37.74,
    zoom: 11
  },
  controller: true,
  getTooltip: ({object}) => object && `${object.pentagon} count: ${object.count}`,
  layers: [layer]
});

import {Deck, PickingInfo} from '@deck.gl/core';
import {GlobalGridLayer} from '@deck.gl/geo-layers';

type DataType = {
  pentagon: string;
  count: number;
};

const layer = new GlobalGridLayer<DataType>({
  id: 'GlobalGridLayer',
  data: 'https://raw.githubusercontent.com/visgl/deck.gl-data/master/website/sf.bike.parking.a5.json',
  globalGrid: A5Decoder,

  extruded: true,
  getPentagon: (f: DataType) => f.pentagon,
  getFillColor: (f: DataType) => {
    const value = f.count / 211;
    return [(1 - value) * 235, 255 - 85 * value, 255 - 170 * value];
  },
  getElevation: (f: DataType) => f.count,
  elevationScale: 10,
  pickable: true
});

new Deck({
  initialViewState: {
    longitude: -122.4,
    latitude: 37.74,
    zoom: 11
  },
  controller: true,
  getTooltip: ({object}: PickingInfo<DataType>) => object && `${object.pentagon} count: ${object.count}`,
  layers: [layer]
});

import React from 'react';
import {DeckGL} from '@deck.gl/react';
import {GlobalGridLayer} from '@deck.gl/geo-layers';
import type {PickingInfo} from '@deck.gl/core';

type DataType = {
  pentagon: string;
  count: number;
};

function App() {
  const layer = new GlobalGridLayer<DataType>({
    id: 'GlobalGridLayer',
    data: 'https://raw.githubusercontent.com/visgl/deck.gl-data/master/website/sf.bike.parking.a5.json',
    globalGrid: A5Decoder,

    extruded: true,
    getPentagon: (f: DataType) => f.pentagon,
    getFillColor: (f: DataType) => {
      const value = f.count / 211;
      return [(1 - value) * 235, 255 - 85 * value, 255 - 170 * value];
    },
    getElevation: (f: DataType) => f.count,
    elevationScale: 10,
    pickable: true
  });

  return <DeckGL
    initialViewState={{
      longitude: -122.4,
      latitude: 37.74,
      zoom: 11
    }}
    controller
    getTooltip={({object}: PickingInfo<DataType>) => object && `${object.pentagon} count: ${object.count}`}
    layers={[layer]}
  />;
}

Installation

To install the dependencies from NPM:

npm install deck.gl
# or
npm install @deck.gl/core @deck.gl/layers @deck.gl/geo-layers

import {GlobalGridLayer} from '@deck.gl/geo-layers';
import type {GlobalGridLayerProps} from '@deck.gl/geo-layers';

new GlobalGridLayer<DataT>(...props: GlobalGridLayerProps<DataT>[]);

To use pre-bundled scripts:

<script src="https://unpkg.com/deck.gl@^9.0.0/dist.min.js"></script>
<!-- or -->
<script src="https://unpkg.com/@deck.gl/core@^9.0.0/dist.min.js"></script>
<script src="https://unpkg.com/@deck.gl/layers@^9.0.0/dist.min.js"></script>
<script src="https://unpkg.com/@deck.gl/geo-layers@^9.0.0/dist.min.js"></script>

new deck.GlobalGridLayer({});

Properties

Inherits from all Base Layer, CompositeLayer, and PolygonLayer properties, plus the following:

Data Accessors

`getPentagon` (Accessor<bigint | string>]

Called for each data object to retrieve the identifier of the DGGS cell id. May return one of the following:

A 64-bit BigInt identifier for the cell.
A string token representing the DGGS-specific string encoding of the 64-bit integer

default: object => object.pentagon

Sub Layers

The GlobalGridLayer renders the following sublayers:

cell - a PolygonLayer rendering the DGGS cells.

Source

modules/geo-layers/src/global-grid-layer

Installation​

Properties​

Data Accessors​

getPentagon (Accessor<bigint | string>] ​

Sub Layers​

Source​