Encountering a problem: Angular is unable to find the function d3.geoAlbersUsa

I'm currently working on a project in Angular 5 where I'm trying to create a d3 map of US states. I am following the example provided at the following link:

http://bl.ocks.org/mbostock/4699541

However, when I write the code in my .ts file and compile it, I encounter an error stating: 'd3.geoAlbersUsa is not a function'.

Here's a snippet of the code:

import { Component } from '@angular/core';
import * as d3TimeFormat from 'd3-time-format';
import * as d3 from 'd3-selection';
import * as d3Scale from 'd3-scale';
import * as d3Shape from 'd3-shape';
import * as d3Array from 'd3-array';
import * as d3Axis from 'd3-axis';
import * as topo from 'topojson';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss']
})
export class AppComponent {

  constructor() {}

  ngOnInit() {
    this.callMap();
  } 

  callMap() {
    var width = 960,
    height = 500,
    active = d3.select(null);

    var projection = d3.geoAlbersUsa()
        .scale(1000)
        .translate([width / 2, height / 2]);

...

In addition, I have included the following scripts in index.html:

  <script src="https://d3js.org/d3.v3.min.js"></script>
  <script src="https://d3js.org/topojson.v1.min.js"></script>
  <script src="https://d3js.org/d3-array.v1.min.js"></script>
  <script src="https://d3js.org/d3-geo.v1.min.js"></script>
  <script src="https://d3js.org/d3-selection.v1.min.js"></script>
  <script src="https://d3js.org/d3-collection.v1.min.js"></script>
  <script src="https://d3js.org/d3-dispatch.v1.min.js"></script>
  <script src="https://d3js.org/d3-request.v1.min.js"></script>

If anyone could assist me in resolving this issue, it would be greatly appreciated.

Thanks!

Answer №1

Make sure to use d3.geo.albersUsa() instead of just `geoPath` which should be replaced with d3.geo.path()

Answer №2

For anyone still grappling with this problem:

Make sure to include the following import statement

import geoAlbersUsa from 'd3-geo';

and implement it in your code like so:

var projection = geoAlbersUsa()
        .scale(1000)
        .translate([width / 2, height / 2]);

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