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Question

how to get the geo data from geo-rss via google ajax feed api .

Answer 1

A:

From an example in the Google AJAX API Code Playground that works

http://code.google.com/apis/ajax/playground/?exp=feeds#load_feed

/*
*  How to load a feed via the Feeds API.
*/

google.load("feeds", "1");

// Our callback function, for when a feed is loaded.
function feedLoaded(result) {
  if (!result.error) {
    // Grab the container we will put the results into
    var container = document.getElementById("content");
    container.innerHTML = '';

    // Loop through the feeds, putting the titles onto the page.
    // Check out the result object for a list of properties returned in each entry.
    // http://code.google.com/apis/ajaxfeeds/documentation/reference.html#JSON
    for (var i = 0; i < result.feed.entries.length; i++) {
      var entry = result.feed.entries[i];
      var div = document.createElement("div");
      div.appendChild(document.createTextNode(entry.title));
      container.appendChild(div);
    }
  }
}

function OnLoad() {
  // Create a feed instance that will grab Digg's feed.
  var feed = new google.feeds.Feed("http://maps.google.com/maps/ms?ie=UTF8&amp;hl=zh-CN&amp;vps=1&amp;jsv=259e&amp;msa=0&amp;output=georss&amp;msid=109685068115364659392.00048b5b630141d82b83a");

  // Calling load sends the request off.  It requires a callback function.
  feed.load(feedLoaded);
}

google.setOnLoadCallback(OnLoad);

brickysam26 2010-07-24 09:12:31

hi brickysam26, look the updated.

zjm1126 2010-07-24 09:33:03

Answer 2

A:

You need to load the XML feed instead of the JSON feed to be able to get the raw XML feed as it is. With the JSON feed, it removes all but the standard RSS and Atom tags and then translates to JSON.

Set the result format to XML as

var feed = new google.feeds.Feed("...");
feed.setResultFormat(google.feeds.Feed.XML_FORMAT);

Here is a modified load function to print XML namespaced elements such as georss:point and gml:LineString.

feed.load(function(result) {
    var georssNS = "http://www.georss.org/georss";
    var gmlNS = "http://www.opengis.net/gml";
    var items = result.xmlDocument.getElementsByTagName("item");

    for(var i = 0; i < items.length; i++) {
        // get <georss:point>
        var georss = google.feeds.getElementsByTagNameNS(items[i], georssNS, "point")[0];
        if(georss) {
            console.log(georss)
        }
        // get <gml:LineString>
        var lineString = google.feeds.getElementsByTagNameNS(items[i], gmlNS, "LineString")[0];
        if(lineString) {
            console.log(lineString);
        }
    }
});

Anurag 2010-07-24 16:33:12

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how to get the geo data from geo-rss via google ajax feed api .

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