async Task <List <Observation2> > LoadTheData()
{
var sf = await Package.Current.InstalledLocation.GetFileAsync(@"Assets\MSFT.json");
var jsonText = await Windows.Storage.FileIO.ReadTextAsync(sf);
var json = JsonObject.Parse(jsonText);
var prices = json.GetNamedObject("Time Series (Daily)");
var list = new List <Observation2>();
foreach (var price in prices)
{
// this is an object not an array so we lose the ordering
var date = price.Key;
var ts = DateTime.Parse(date);
var ohlcv = price.Value.GetObject();
var open = ohlcv.GetNamedString("1. open");
var high = ohlcv.GetNamedString("2. high");
var low = ohlcv.GetNamedString("3. low");
var close = ohlcv.GetNamedString("4. close");
var volume = ohlcv.GetNamedString("5. volume");
var obs = new Observation2(date, double.Parse(open), double.Parse(high), double.Parse(low), double.Parse(close), int.Parse(volume))
{
Timestamp = ts
};
list.Add(obs);
}
// since it's a Map we need to sort things based on the "date" keys
list.Sort((o1, o2) => {
return(o1.Timestamp.CompareTo(o2.Timestamp));
});
return(list);
}
/// <summary>
/// Fabricate the "next" observation.
/// </summary>
/// <param name="label"></param>
/// <returns></returns>
protected Observation2 Next(string label)
{
var v1 = 4 + .5 - rnd.NextDouble();
var v2 = 3 + .5 - rnd.NextDouble();
var v3 = -2 + .5 - rnd.NextDouble();
var v4 = -4 + .5 - rnd.NextDouble();
var v5 = 10 * rnd.NextDouble();
var obs = new Observation2(label, v1, v2, v3, v4, (int)v5);
return(obs);
}
