Show all overlay series after specific zoom level - Interactive Geo Maps

drilldownzoom.js

let mapID = 11111; // replace with your map ID
let igmNow = Date.now();
let igmZoomLevel = 3;
mapContainer.addEventListener('mapready', function(ev) {
    let igmap = iMaps.maps[mapID].map;
    igmap.events.on("zoomlevelchanged", function(ev) {
        if( Date.now() >= igmNow + 500){
            let series = iMaps.maps[mapID].series;
            series.forEach(function(serie) {
                    if( iMaps.maps[mapID].allBaseSeries.includes( serie ) ){ return; }
                    if (igmap.zoomLevel >= igmZoomLevel) {
                        serie.show();
                    } else {
                        serie.hide();
                    }
            });
        }
    });
});