yuicharts-doBeforeParseData-snippet

var myDataSource = new YAHOO.util.DataSource( "[YOUR_DATA_URL]" );
myDataSource.connMethodPost = true;
myDataSource.responseType = YAHOO.util.DataSource.TYPE_JSON;
myDataSource.responseSchema =
{
		resultsList: "sales",
		fields: ["order_date","northamerican", "asian"]
};

myDataSource.doBeforeParseData = function (oRequest, oFullResponse, oCallback)
{
	var i, 
		results = oFullResponse.sales, 
		len = results.length, 
		filter, 
		hash = {}, 
		item, 
		parsedItem, 
		parsedItems = [];
	for(i = 0; i < len; ++i)
	{
		item = results[i];
		filter = item.region;
		if(hash.hasOwnProperty(item.order_date))
		{
			parsedItem = parsedItems[hash[item.order_date]];
		}
		else
		{
			parsedItem = {order_date:item.order_date};
			hash[item.order_date] = parsedItems.length;
			parsedItems.push(parsedItem);
		}
		if(filter == "Asia")
		{
			parsedItem.asian = item.total;
		}
		if(filter == "North America")
		{
			parsedItem.northamerican = item.total;
		}
	}
	return {sales:parsedItems};
}

var seriesDef =
[
	{displayName:"Asia Sales", yField:"asian"},
	{displayName:"North America", yField:"northamerican"}
];