geoXML3 add custom icon for marker

Question

I am trying to add a custom icon for the marker after parsing a kml file with geoXML3, but I cannot figure out how. I cannot add specifications in the kml files, so I am trying to do it with Javascript. I didn't manage to find any useful documentation about it. This is my kml loading:

    myparser.parse('http://mywebsite.com/myparser/last_feed/now.kml');
    var myparser= new geoXML3.parser({map: map,zoom:7,icon: image});

Answer 1

To change all the marker icons using geoxml3, set the markerOptions.icon property as described in the documentation (the markerOptions object is used to populate the MarkerOptions for all markers created with geoxml3).

var myparser = new geoXML3.parser({
  map: map,
  markerOptions: {
    icon: "http://maps.google.com/mapfiles/ms/micons/blue.png"
  }
});

proof of concept fiddle

code snippet:

function initialize() {
  var map = new google.maps.Map(
    document.getElementById("map_canvas"), {
      center: new google.maps.LatLng(37.4419, -122.1419),
      zoom: 13,
      mapTypeId: google.maps.MapTypeId.ROADMAP
    });
  var myparser = new geoXML3.parser({
    map: map,
    singleInfoWindow: true,
    markerOptions: {
      icon: "http://maps.google.com/mapfiles/ms/micons/blue.png"
    }
  });
  myparser.parseKmlString(kmlStr);
}
google.maps.event.addDomListener(window, "load", initialize);
var kmlStr = '<?xml version="1.0" encoding="UTF-8"?><kml xmlns="http://www.opengis.net/kml/2.2" xmlns:gx="http://www.google.com/kml/ext/2.2" xmlns:kml="http://www.opengis.net/kml/2.2" xmlns:atom="http://www.w3.org/2005/Atom"><Document> <name>Massachusetts Cities</name> <Folder> <Placemark>  <name>Boston</name>  <description>Boston is the capital of and largest city in Massachusetts. The Boston Massacre and the Boston Tea Party occurred in Boston and led to the American Revolution.</description>  <LookAt>  <longitude>-71.05977300312775</longitude>  <latitude>42.35843100531216</latitude>  <altitude>0</altitude>  <heading>-2.107386233340164e-009</heading>  <tilt>0</tilt>  <range>34426.00143998101</range>  <altitudeMode>relativeToGround</altitudeMode>  <gx:altitudeMode>relativeToSeaFloor</gx:altitudeMode>  </LookAt>  <styleUrl>#msn_ylw-pushpin9</styleUrl>  <Point>  <altitudeMode>absolute</altitudeMode>  <coordinates>-71.05977300312775,42.35843100531217,3.1482280535562</coordinates>  </Point> </Placemark> <Placemark>  <name>Worcester</name>  <description>Worcester is known as the &quot;Heart of the Commonwealth&quot; due to its location in central Massachusetts, thus, a heart is the official symbol of the city.</description>  <LookAt>  <longitude>-71.80229299737233</longitude>  <latitude>42.2625930065606</latitude>  <altitude>0</altitude>  <heading>1.76716070878667e-009</heading>  <tilt>0</tilt>  <range>17233.50055269895</range>  <altitudeMode>relativeToGround</altitudeMode>  <gx:altitudeMode>relativeToSeaFloor</gx:altitudeMode>  </LookAt>  <styleUrl>#msn_ylw-pushpin0</styleUrl>  <Point>  <altitudeMode>absolute</altitudeMode>  <coordinates>-71.80229299737233,42.26259300656061,145.2545892926215</coordinates>  </Point> </Placemark> <Placemark>  <name>Springfield</name>  <description>Historically the first Springfield in America.</description>  <LookAt>  <longitude>-72.58981099924824</longitude>  <latitude>42.10148299778795</latitude>  <altitude>0</altitude>  <heading>5.040065975981161e-010</heading>  <tilt>0</tilt>  <range>17277.36855774167</range>  <altitudeMode>relativeToGround</altitudeMode>  <gx:altitudeMode>relativeToSeaFloor</gx:altitudeMode>  </LookAt>  <styleUrl>#msn_ylw-pushpin6</styleUrl>  <Point>  <altitudeMode>absolute</altitudeMode>  <coordinates>-72.58981099984295,42.10148300097482,39.44687703020819</coordinates>  </Point> </Placemark> <Placemark>  <name>Lowell</name>  <description>Lowell is known as the birthplace of the industrial revolution in the United States.</description>  <LookAt>  <longitude>-71.31617200184621</longitude>  <latitude>42.63342499640326</latitude>  <altitude>0</altitude>  <heading>-1.250482781337603e-009</heading>  <tilt>0</tilt>  <range>8564.451680780059</range>  <altitudeMode>relativeToGround</altitudeMode>  <gx:altitudeMode>relativeToSeaFloor</gx:altitudeMode>  </LookAt>  <styleUrl>#msn_ylw-pushpin3</styleUrl>  <Point>  <altitudeMode>absolute</altitudeMode>  <coordinates>-71.31617200184621,42.63342499640325,32.71923637446179</coordinates>  </Point> </Placemark> <Placemark>  <name>Cambridge</name>  <description>Cambridge is home to two internationally prominent universities, Harvard University and the Massachusetts Institute of Technology. </description>  <LookAt>  <longitude>-71.10965300713373</longitude>  <latitude>42.37264000434871</latitude>  <altitude>0</altitude>  <heading>-4.807793248148562e-009</heading>  <tilt>0</tilt>  <range>8600.20020650975</range>  <altitudeMode>relativeToGround</altitudeMode>  <gx:altitudeMode>relativeToSeaFloor</gx:altitudeMode>  </LookAt>  <styleUrl>#msn_ylw-pushpin2</styleUrl>  <Point>  <altitudeMode>absolute</altitudeMode>  <coordinates>-71.10965300713372,42.37264000434871,7.159466020276252</coordinates>  </Point> </Placemark> <Placemark>  <name>Brockton </name>  <description>Brockton is sometimes referred to as the &quot;City of Champions&quot; due to the success of native boxers Rocky Marciano and Marvin Hagler.</description>  <LookAt>  <longitude>-71.01837899995951</longitude>  <latitude>42.08343399824823</latitude>  <altitude>0</altitude>  <heading>2.712218004618013e-011</heading>  <tilt>0</tilt>  <range>8639.699317635228</range>  <altitudeMode>relativeToGround</altitudeMode>  <gx:altitudeMode>relativeToSeaFloor</gx:altitudeMode>  </LookAt>  <styleUrl>#msn_ylw-pushpin</styleUrl>  <Point>  <altitudeMode>absolute</altitudeMode>  <coordinates>-71.0183789999595,42.08343399824823,30.29967761376449</coordinates>  </Point> </Placemark> <Placemark>  <name>New Bedford</name>  <description>New Bedford is nicknamed &quot;The Whaling City&quot; because during the 19th century it was one of the most important whaling ports in the world.</description>  <LookAt>  <longitude>-70.93420500203244</longitude>  <latitude>41.63621500187266</latitude>  <altitude>0</altitude>  <heading>-1.350326753898106e-009</heading>  <tilt>0</tilt>  <range>17403.47639378627</range>  <altitudeMode>relativeToGround</altitudeMode>  <gx:altitudeMode>relativeToSeaFloor</gx:altitudeMode>  </LookAt>  <styleUrl>#msn_ylw-pushpin4</styleUrl>  <Point>  <altitudeMode>absolute</altitudeMode>  <coordinates>-70.93420500203244,41.63621500187266,24.75716633283448</coordinates>  </Point> </Placemark> <Placemark>  <name>Fall River</name>  <description>Fall River is known for Battleship Cove which has the world&apos;s largest collection of World War II naval vessels.</description>  <LookAt>  <longitude>-71.15504499654021</longitude>  <latitude>41.70149101206891</latitude>  <altitude>0</altitude>  <heading>2.301640200787889e-009</heading>  <tilt>0</tilt>  <range>17385.8377123415</range>  <altitudeMode>relativeToGround</altitudeMode>  <gx:altitudeMode>relativeToSeaFloor</gx:altitudeMode>  </LookAt>  <styleUrl>#msn_ylw-pushpin7</styleUrl>  <Point>  <altitudeMode>absolute</altitudeMode>  <coordinates>-71.15504499654021,41.70149101206891,23.26129426529637</coordinates>  </Point> </Placemark> <Placemark>  <name>Lynn</name>  <description>Lynn is about 7 miles north of downtown Boston.</description>  <LookAt>  <longitude>-70.94949399981969</longitude>  <latitude>42.46676300410375</latitude>  <altitude>0</altitude>  <heading>1.217166471049273e-010</heading>  <tilt>0</tilt>  <range>8587.326697933368</range>  <altitudeMode>relativeToGround</altitudeMode>  <gx:altitudeMode>relativeToSeaFloor</gx:altitudeMode>  </LookAt>  <styleUrl>#msn_ylw-pushpin5</styleUrl>  <Point>  <altitudeMode>absolute</altitudeMode>  <coordinates>-70.94949399981969,42.46676300410375,14.89168526609486</coordinates>  </Point> </Placemark> <Placemark>  <name>Quincy</name>  <description>Quincy is the birthplace of U.S. Presidents John Adams and John Quincy Adams.</description>  <LookAt>  <longitude>-71.00227000742845</longitude>  <latitude>42.25287699598879</latitude>  <altitude>0</altitude>  <heading>-4.994952988379282e-009</heading>  <tilt>0</tilt>  <range>17236.11617372477</range>  <altitudeMode>relativeToGround</altitudeMode>  <gx:altitudeMode>relativeToSeaFloor</gx:altitudeMode>  </LookAt>  <styleUrl>#msn_ylw-pushpin8</styleUrl>  <Point>  <altitudeMode>absolute</altitudeMode>  <coordinates>-71.00227000742845,42.25287699598879,14.5549973299613</coordinates>  </Point> </Placemark> </Folder></Document></kml>';

html,
body,
#map_canvas {
  height: 100%;
  width: 100%;
  margin: 0px;
  padding: 0px
}

<script src="https://maps.googleapis.com/maps/api/js"></script>
<script src="https://cdn.rawgit.com/geocodezip/geoxml3/master/polys/geoxml3.js"></script>
<div id="map_canvas"></div>