Where 2.0 - Location on the Web

Posted May 29, 2009 no comments

Now that Where 2.0 and WhereCamp are over, I wanted to get my code and slides posted.

You can download a zip of the source files, including the Store Locator demo, here

Where 2.0 2009 - Location on the Web

For demonstration, here is the source of the simple Loki demo:

<html>
<head>
<script type="text/javascript" src="http://loki.com/plugin/files/loki.js"></script>
<script type="text/javascript">
function init() {

  // instantiate the LokiAPI object
  var loki = new LokiAPI();

  // setup your success handler. a location object is passed in
  loki.onSuccess = function(location) {
    document.getElementById('address').innerHTML = location.house_number+' '+location.street+'<br/>'+location.city+', '+location.region_code+' '+location.postal_code+'<br/>'+location.latitude+', '+location.longitude;
  };

  // setup your failure handler. error code and string message are passed in
  loki.onFailure = function(error, msg){
    alert('An error has been encountered ('+error+'). '+msg);
  };

  // swap in your own, domain-specific key. http://loki.com/how/register
  loki.setKey('sarver.org');

  // make the location request. Reverse geocoding is requested
  loki.requestLocation(true,loki.FULL_STREET_ADDRESS_LOOKUP);
}
window.onload = init;
</script>
</head>
<body>
<div id="address"></div>
</body>
</html>

Search Flickr Photos based on Time and Geolocation

Posted May 8, 2009 no comments

Just the other day I was working on a hack project at work where we wanted to pull up geotagged photos of an event purely based on a geo and time filter. I couldn’t find any good source code out there, so I thought I would post this. It uses phpFlickr for the Flickr API calls.

Please feel free to post any comments / suggestions

<style>
label {display:block}
</style>
<form action="index.php">
<h4>Bounding Box</h4>
<label>Bottom Left - Latitude</label>
<input type="text" id="bl_lat"/>
<label>Bottom Left - Longitude</label>
<input type="text" id="bl_lon"/>
<label>Top Right - Latitude</label>
<input type="text" id="tr_lat"/>
<label>Top Right - Longitude</label>
<input type="text" id="tr_lon"/>
<h4>Date Range</h4>
<label>Start Date/Time (YYYY-MM-DD HH:MM:SS)</label>
<input type="text" id="date_start"/>
<label>End Date/Time (YYYY-MM-DD HH:MM:SS)</label>
<input type="text" id="date_end"/>
</form>

<?php

if (!$_REQUEST['bl_lat'] || !$_REQUEST['bl_lon'] || !$_REQUEST['tr_lat'] || !$_REQUEST['tr_lon'] || !$_REQUEST['date_start'] || !$_REQUEST['date_end']) {
  echo '<span style="color:red">All fields are required</span>';
}
else {
  require_once("phpFlickr.php");

  $key    = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
  $secret = "XXXXXXXXXXXX";

  $f = new phpFlickr($key, $secret, true);

  $date['start'] = date("Y-m-d H:i:s", strtotime($_REQUEST['date_start']));
  $date['end'] = date("Y-m-d H:i:s", strtotime($_REQUEST['date_end']));
  print_r($date);
  echo '<br/>';

  $photos = $f->photos_search(array(
                            "min_taken_date"  => $date['start'],
                            "max_taken_date"  => $date['end'],
                            "sort"  => "interestingness-desc",
                            "bbox"  => $_REQUEST['bl_lon'].','.$_REQUEST['bl_lat'].','.$_REQUEST['tr_lon'].','.$_REQUEST['tr_lat'],
                            "extras"  => "date_taken,date_upload,geo,tags"
                            ));

  echo '<!--';
  print_r($photos);
  echo '-->';

  echo "count: ".count($photos['photo']).'<br/>';
  foreach($photos['photo'] as $photo) {
    $owner = $f->people_getInfo($photo['owner']);
    echo '<img src="http://farm'.$photo['farm'].'.static.flickr.com/'.$photo['server'].'/'.$photo['id'].'_'.$photo['secret'].'_m.jpg"/>';
  }
}
?>

ooops…

Posted April 10, 2009 one comment

Sadly my server crashed and Im having to dig back out and rebuild my site and blog from some back up files. Please bear with me until its back online.

As a side note, I find myself not nearly as concerned about my blog as all of my content is really on Twitter. So if you are looking for my real updates follow me @rsarver