React Binding CSV Files with Geographic Locations

With the Ignite UI for React map component, you can plot geographic data loaded from various file types. For example, you can load geographic locations from a comma separated values (CSV) file.

React Binding CSV Files with Geographic Locations Example

Data Example

Here is an example of data from CSV file:

City,Lat,Lon,State,Code,County,Density,Population
New York,40.7856,-74.0093,New Jersey,NJ,Hudson,21057,54227
Dundee,42.5236,-76.9775,New York,NY,Yates,579,1650

Code Snippet

The following code loads and binds IgrGeographicHighDensityScatterSeries in the map component to an array of objects created from loaded CSV file with geographic locations.

import { IgrGeographicHighDensityScatterSeries } from 'igniteui-react-maps';
// ...

public componentDidMount() {
    // fetching CSV data with geographic locations from public folder
    fetch(url + "/Data/UsaCities.csv")
        .then((response) => response.text())
        .then(data => this.onDataLoaded(data));
}

public onDataLoaded(csvData: string) {
    const csvLines = csvData.split("\n");

    // parsing CSV data and creating geographic locations
    const geoLocations: any[] = [];
    for (let i = 1; i < csvLines.length; i++) {
        const columns = csvLines[i].split(",");
        // using CSV columns: City,Lat,Lon,State,Code,County,Density,Population
        const location = {
            name:  columns[0],
            latitude:  Number(columns[1]),
            longitude: Number(columns[2]),
            state: columns[3],
            code: columns[4],
            county: columns[5],
            density: Number(columns[6]),
            population: Number(columns[7])
        };
        geoLocations.push(location);
    }

    // creating HD series with loaded data
    const geoSeries = new IgrGeographicHighDensityScatterSeries( { name: "hdSeries" });
    geoSeries.dataSource = geoLocations;
    geoSeries.latitudeMemberPath  = "latitude";
    geoSeries.longitudeMemberPath = "longitude";
    geoSeries.heatMaximumColor = "Red";
    geoSeries.heatMinimumColor = "Black";
    geoSeries.heatMinimum = 0;
    geoSeries.heatMaximum = 5;
    geoSeries.pointExtent = 1;
    geoSeries.mouseOverEnabled = true;
    // adding symbol series to the geographic amp
    this.geoMap.series.add(geoSeries);
}

API References