天地图

Introduction

L7 geographical visualization focuses on the visual expression of geographical data. The map layer needs to rely on third-party maps. Third-party maps are created and managed uniformly through Scene. You only need to pass in map configuration items through Scene.

L7 internally resolves the differences between different map basemaps, and at the same time, L7 manages the operation methods of the map in a unified manner.

Tianditu official website

Apply for token

Tianditu JavaScript API 4.0 supports HTTP and HTTPS, is free and open to the public, and can be used directly. Before using the API, you need to apply for application key.

import

import { TdtMap } from '@antv/l7-maps';

Usage

import { Scene } from '@antv/l7';
import { TdtMap } from '@antv/l7-maps';

const scene = new Scene({
  id: 'map',
  map: new TdtMap({
    token: 'your-tianditu-token',
    center: [120, 30],
    zoom: 10,
  }),
});

scene.on('loaded', () => {
  // Add layers
});

Options

Name	Description	Type	Default
token	Tianditu API Key	`string`	Built-in test token (replace in production)
center	Initial map center coordinates	`[number, number]`	`[121.30654, 31.25744]`
zoom	Initial zoom level	`number`	`3`
minZoom	Minimum zoom level	`number`	`1`
maxZoom	Maximum zoom level	`number`	`18`
mapInstance	Pass in an existing Tianditu map instance	`T.Map`	-

options

zoom initialize zoom level

number

Initial map display level {number} Mapbox (0-24) AMap (2-19)

center map center

Map initial center latitude and longitude {Lnglat}

pitch map tilt angle

Map initial pitch angle {number} default 0

minZoom minimum zoom level

Minimum map zoom level {number} default 0 Mapbox 0-24) Gaode (2-19)

maxZoom maximum zoom level

Maximum map zoom level {number} default 22 Mapbox (0-24) AMap (2-19)

rotateEnable whether to allow rotation

Whether the map can be rotated {Boolean} default true

map events

Scene unified agent, seeScene document

scene.map directly calls the map instance method