try using an OpenLayers.Geometry.Point instead of an OpenLayers.LonLat
ie (untested, but i think this is rather correct):
function parseTweetsQ(){
if (tweetsQ.length > 0) {
var tweet = tweetsQ.pop();
if (tweet.geo){
tweet.point = new
OpenLayers.Geometry.Point(tweet.geo.coordinates[0],tweet.geo.coordinates[1]).transform(new
OpenLayers.Projection("EPSG:4326"),map.getProjectionObject());
tweet.attributes = {}; //in this you coukd stuff attributes of the
tweet for easy access on clicks etc.
plotTwt(tweet);
}
}
}
function plotTwt(tweet){
//why do you keep adding the layer for each tweet?
map.addLayer(tweetz);
tweet.marker = new
OpenLayers.Feature.Vector(tweet.point,{attributes:{tweet.attributes]});
tweetz.addFeatures([tweet.marker]);
}
On 2011-06-21 05:00, Nicholas Efremov-Kendall wrote:
Hi Phil et al,
Thanks for your response. The code as is does iterate through the
features as they are returned. I have a handle on it up to the plotting
function. An alert on the tweet.marker object returns [object Object], while
tweet.latlng returns readable coordinates lon=38.6834,lat=-90.4313. I guess
what I'm unsure about is how to parse the object which is passed to the third
function. Thanks again.
function acquireTweets(){
$.getJSON(createTWTsrcURL(), function(data){
if(data.results)
$.each(data.results, function(i, tweet){
if (tweet.geo || tweet.location)
tweetsQ.push(tweet);
});
refreshQuery = data.refresh_url;
});}
function parseTweetsQ(){
if (tweetsQ.length > 0) {
var tweet = tweetsQ.pop();
if (tweet.geo){
tweet.latlng = new
OpenLayers.LonLat(tweet.geo.coordinates[0],tweet.geo.coordinates[1]);
plotTwt(tweet);
}}}
function plotTwt(tweet){
map.addLayer(tweetz);
tweet.marker = new OpenLayers.Feature.Vector(new
OpenLayers.Geometry.Point(tweet.latlng).transform(new
OpenLayers.Projection("EPSG:4326"),map.getProjectionObject()));
tweetz.addFeatures([tweet.marker]);}
On Mon, Jun 20, 2011 at 9:13 PM, Phil Scadden <[email protected]>
wrote:
I have no idea what the object returned by twitter is but
surely, but if
you are using jsonp, then
have in your code something like:
jsonp_function(json)
where jsonp_function is the name of jsonp callback and json is
the
returned object. I would guess it contains an array of feature
type
objects, so you would iterate through the array, creating
feature for
each row, and calling vectorLayer.addFeatures(features) to add
them to
the vector layer.
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