Set Fill Color Marker Google Map

How can I use my last column to set the color of the marker? google.load('visualization', '1', {packages:['map']}); google.setOnLoadCallback(drawChart); function drawChart()

Solution 1:

You can use Symbols

function pinSymbol(color) {
    return {
        path: 'M 0,0 C -2,-20 -10,-22 -10,-30 A 10,10 0 1,1 10,-30 C 10,-22 2,-20 0,0 z',
        fillColor: color,
        fillOpacity: 1,
        strokeColor: '#000',
        strokeWeight: 2,
        scale: 1
    };
}

example fiddle

code snippet:

var data = [
  /* ['Lat', 'Long', 'Name', 'Color'], */
  [47.5, -122.0, 'Test 1', '#56df23'],
  [47.6, -122.2, 'Test 2', '#0023f6'],
  [47.7, -122.1, 'Test 2', 'yellow']
];

function initialize() {
  var latlng = new google.maps.LatLng(47.605, -122.333);
  var myOptions = {
    zoom: 10,
    center: latlng,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  };
  var map = new google.maps.Map(document.getElementById("map_canvas"),
    myOptions);
  var marker = new google.maps.Marker({
    map: map,
    position: latlng,
    icon: pinSymbol('red')
  });

  for (var i = 0; i < data.length; i++) {
    var marker1 = new google.maps.Marker({
      map: map,
      position: new google.maps.LatLng(data[i][0], data[i][1]),
      icon: pinSymbol(data[i][3])
    });
  }
}

function pinSymbol(color) {
  return {
    path: 'M 0,0 C -2,-20 -10,-22 -10,-30 A 10,10 0 1,1 10,-30 C 10,-22 2,-20 0,0 z',
    fillColor: color,
    fillOpacity: 1,
    strokeColor: '#000',
    strokeWeight: 2,
    scale: 1
  };
}

google.maps.event.addDomListener(window, 'load', initialize);

html,
body,
#map_canvas {
  height: 500px;
  width: 500px;
  margin: 0px;
  padding: 0px
}

<script src="https://maps.googleapis.com/maps/api/js"></script>
<div id="map_canvas" style="width:750px; height:450px; border: 2px solid #3872ac;"></div>

Solution 2:

There is no way to change the standard marker pin color.

You have to build your own usin Icon or Symbol.

If you don't wan't to use PNG you can use SVG, with SVG you can change the way your icon looks like without a backend server.

var marker = new google.maps.Marker({
    map: map,
    icon: 'data:image/svg+xml,<svg version="1.1" id="Capa_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="50px" height="50px" viewBox="0 0 438.536 438.536" style="enable-background:new 0 0 438.536 438.536;" xml:space="preserve"><g><path fill="gree" d="M322.621,42.825C294.073,14.272,259.619,0,219.268,0c-40.353,0-74.803,14.275-103.353,42.825c-28.549,28.549-42.825,63-42.825,103.353c0,20.749,3.14,37.782,9.419,51.106l104.21,220.986c2.856,6.276,7.283,11.225,13.278,14.838c5.996,3.617,12.419,5.428,19.273,5.428c6.852,0,13.278-1.811,19.273-5.428c5.996-3.613,10.513-8.562,13.559-14.838l103.918-220.986c6.282-13.324,9.424-30.358,9.424-51.106C365.449,105.825,351.176,71.378,322.621,42.825zM270.942,197.855c-14.273,14.272-31.497,21.411-51.674,21.411s-37.401-7.139-51.678-21.411c-14.275-14.277-21.414-31.501-21.414-51.678c0-20.175,7.139-37.402,21.414-51.675c14.277-14.275,31.504-21.414,51.678-21.414c20.177,0,37.401,7.139,51.674,21.414c14.274,14.272,21.413,31.5,21.413,51.675C292.355,166.352,285.217,183.575,270.942,197.855z"/></g></svg>',
    position: new google.maps.LatLng(-33.9, 151.2)
});

https://jsfiddle.net/k510L9u2/

With SVG you can use more advanced graphics then using the Symbol option, with Symbols you can create SVG paths only.

Solution 3:

You cannot change the color of the marker, you can only change the icon associated to a marker

marker = new google.maps.Marker({
  position: new google.maps.LatLng(lat, lng),
  map: map,
  icon:'youricon.png'
});