Answers for "here maps api how to search a markers"

here maps api how to search a markers

function findNearestMarker(coords) {
  var minDist = 1000,
    nearest_text = '*None*',
    markerDist,
    // get all objects added to the map
    objects = map.getObjects(),
    len = map.getObjects().length,
    i;

  // iterate over objects and calculate distance between them
  for (i = 0; i < len; i += 1) {
    markerDist = objects[i].getGeometry().distance(coords);
    if (markerDist < minDist) {
      minDist = markerDist;
      nearest_text = objects[i].getData();
    }
  }

  logEvent('The nearest marker is: ' + nearest_text);
}

function addClickEventListenerToMap(map) {
  // add 'tap' listener
  map.addEventListener('tap', function (evt) {
    var coords =  map.screenToGeo(evt.currentPointer.viewportX, evt.currentPointer.viewportY);
    findNearestMarker(coords);
  }, false);
}

/**
 * Boilerplate map initialization code starts below:
 */

//Step 1: initialize communication with the platform
// In your own code, replace variable window.apikey with your own apikey
var platform = new H.service.Platform({
  apikey: window.apikey
});
var defaultLayers = platform.createDefaultLayers();

//Step 2: initialize a map
var map = new H.Map(document.getElementById('map'),
  defaultLayers.vector.normal.map,{
  center: {lat: 60.1697, lng:24.8292},
  zoom: 16,
  pixelRatio: window.devicePixelRatio || 1
});
// add a resize listener to make sure that the map occupies the whole container
window.addEventListener('resize', () => map.getViewPort().resize());

//Step 3: make the map interactive
// MapEvents enables the event system
// Behavior implements default interactions for pan/zoom (also on mobile touch environments)
var behavior = new H.mapevents.Behavior(new H.mapevents.MapEvents(map));

// Step 4: create custom logging facilities
var logContainer = document.createElement('ul');
logContainer.className ='log';
logContainer.innerHTML = '<li class="log-entry">Try clicking on the map</li>';
map.getElement().appendChild(logContainer);

// Helper for logging events
function logEvent(str) {
  var entry = document.createElement('li');
  entry.className = 'log-entry';
  entry.textContent = str;
  logContainer.insertBefore(entry, logContainer.firstChild);
}

// Set up five markers.
var coords = [{ lat:60.1697, lng:24.8292},
  { lat: 60.1704, lng: 24.8285 },
  { lat: 60.1709, lng: 24.8277 },
  { lat: 60.1700, lng: 24.8265 },
  { lat:60.1700, lng: 24.8283}];

//Create the svg mark-up
var svgMarkup = '<svg width="24" height="24" xmlns="http://www.w3.org/2000/svg">' +
    '<rect stroke="white" fill="#1b468d" x="1" y="1" width="22" height="22" />' +
    '<text x="12" y="18" font-size="12pt" font-family="Arial" font-weight="bold" ' +
    'text-anchor="middle" fill="white">${REPLACE}</text></svg>';

coords.forEach(function (value, index) {
  var myIcon = new H.map.Icon(svgMarkup.replace('${REPLACE}', index + 1), {
    anchor: {x: 12, y: 12}
  }),
  marker = new H.map.Marker(value,  {
    icon: myIcon,
    volatility: true
  });
  // add custom data to the marker
  marker.setData(index + 1);

  // set draggable attribute on the marker so it can recieve drag events
  marker.draggable = true;
  map.addObject(marker);
});


// simple D'n"D implementation for markers"'
map.addEventListener('dragstart', function(ev) {
  var target = ev.target;
  if (target instanceof H.map.Marker) {
    behavior.disable();
  }
}, false);

map.addEventListener('drag', function(ev) {
  var target = ev.target,
      pointer = ev.currentPointer;
  if (target instanceof H.map.Marker) {
    target.setGeometry(map.screenToGeo(pointer.viewportX, pointer.viewportY));
  }
}, false);

map.addEventListener('dragend', function(ev) {
  var target = ev.target;
  if (target instanceof H.map.Marker) {
    behavior.enable();
  }
}, false);

// Add the click event listener.
addClickEventListenerToMap(map);