Add traffic overlay to map

Hi Hankliu

Im not getting much help about overlay issues. hmm. Cannot understand how to use the add on modules that cleary have the overlay functionality.

Hi

You can add overlay to the map by adding 'overlay' sections into your macro in 'Build a GMap macro'. You can use kml files like this which using Google Earth. Instruction is in: modules\gmap_addons\gmap_overlays\README.txt

I builded macro with line 'overlay=kml:http://mapgadgets.googlepages.com/cta.kml ' for tests:

[gmap overlay=kml:http://mapgadgets.googlepages.com/cta.kml |markers=small red::41.840408844786396,-87.71209716796875 |zoom=9 |center=41.887965758804484,-87.81646728515625 |width=700px |height=500px |control=Small |type=Physical]

but something is wrong because I get warning and overlay don't display:

warning: Invalid argument supplied for foreach() in C:\...\drupal-6.16\modules\gmap_addons\gmap_overlays\gmap_overlays.module on line 46.

I tried to open 'http://mapgadgets.googlepages.com/cta.kml' file in Google Earth and it work, so I think something is bad with 'gmap_overlays' module.

I'm using:
PHP 5.3.1
Drupal 6.16
gmap-6.x-1.1-rc1 with some patches for PHP 5.3.1

Sorry for my English.

I've added traffic to the map. I know this thread is a bit old but it might save someone time in the future:

In a javascript file (traffic-overlay.js):

(function($) {
  // just to make sure everything is loaded properly
  if(($('#map_id')) && (Drupal.gmap)) {
    Drupal.gmap.addHandler('gmap', function (elem) {
      var obj = this;

      obj.bind('init', function () {
        var trafficOptions = {incidents:true};
        trafficInfo = new GTrafficOverlay(trafficOptions);
        obj.map.addOverlay(trafficInfo);

      });
    });
  }
})(jQuery);

Then:

<?php
// scope ensures that the gmap object is properly loaded before this code gets called
drupal_add_js('/path/to/js/traffic-overlay.js',array('scope'=>'footer'));
?>

This old issue is in fact fixed!