Web Components Binding CSV Files with Geographic Locations

With the Ignite UI for Web Components 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.

Web Components Binding CSV Files with Geographic Locations Example

Data Example

Here is an example of data from CSV file:

CityName,Lat,Lon,Population
New York,40.6943,-73.9249,19354922
Los Angeles,34.1139,-118.4068,12815475

Code Snippet

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

<igc-geographic-map
    id="geoMap"
    height="100%"
    width="100%"
    zoomable="true">
</igc-geographic-map>

var map = this.geoMap;
var url = "https://static.infragistics.com/xplatform/data/UsaCitiesPopulation.csv";
fetch(url)
    .then((response) => response.text())
    .then((csvData: string) => {
        var csvLines = csvData.split("\n");
        var geoLocations: any[] = [];
        // parsing CSV data and creating geographic locations
        for (var i = 1; i < csvLines.length; i++) {
            var columns = csvLines[i].split(",");
            if (columns.length < 4) continue;
            geoLocations.push({
                name: columns[0],
                latitude: Number(columns[1]),
                longitude: Number(columns[2]),
                population: Number(columns[3])
            });
        }
        // creating the series with the loaded data
        var series = new IgcGeographicHighDensityScatterSeriesComponent();
        series.name = "hdSeries";
        series.dataSource = geoLocations;
        series.latitudeMemberPath = "latitude";
        series.longitudeMemberPath = "longitude";
        series.heatMaximumColor = "Red";
        series.heatMinimumColor = "Black";
        series.heatMinimum = 0;
        series.heatMaximum = 5;
        series.pointExtent = 1;
        series.mouseOverEnabled = true;
        // adding the series to the geographic map
        map.series.add(series);

        // zooming to the bounds of the lower 48 states
        map.zoomToGeographic({
            left: -130,
            top: 15,
            width: Math.abs(-130 + 65),
            height: Math.abs(50 - 15)
        });
    });

API References