static async Task DetectChangePoint(IAnomalyDetectorClient client, Request request)
{
Console.WriteLine("Detecting the change points in the series.");
var cpdr = new ChangePointDetectRequest(request.Series, request.Granularity);
ChangePointDetectResponse result = await client.ChangePointDetectAsync(cpdr).ConfigureAwait(false);
if (result.IsChangePoint.Contains(true))
{
Console.WriteLine("A change point was detected at index:");
for (int i = 0; i < request.Series.Count; ++i)
{
if (result.IsChangePoint[i])
{
Console.Write(i);
Console.Write(" ");
}
}
Console.WriteLine();
}
else
{
Console.WriteLine("No change point detected in the series.");
}
}
public async Task DetectChangePoint()
{
//read endpoint and apiKey
string endpoint = TestEnvironment.Endpoint;
string apiKey = TestEnvironment.ApiKey;
var endpointUri = new Uri(endpoint);
var credential = new AzureKeyCredential(apiKey);
//create client
AnomalyDetectorClient client = new AnomalyDetectorClient(endpointUri, credential);
#region Snippet:ReadSeriesDataForChangePoint
//read data
string datapath = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "samples", "data", "request-data.csv");
List <TimeSeriesPoint> list = File.ReadAllLines(datapath, Encoding.UTF8)
.Where(e => e.Trim().Length != 0)
.Select(e => e.Split(','))
.Where(e => e.Length == 2)
.Select(e => new TimeSeriesPoint(float.Parse(e[1]))
{
Timestamp = DateTime.Parse(e[0])
}).ToList();
//create request
ChangePointDetectRequest request = new ChangePointDetectRequest(list, TimeGranularity.Daily);
#endregion
#region Snippet:DetectChangePoint
//detect
Console.WriteLine("Detecting the change point in the series.");
ChangePointDetectResponse result = await client.DetectChangePointAsync(request).ConfigureAwait(false);
if (result.IsChangePoint.Contains(true))
{
Console.WriteLine("A change point was detected at index:");
for (int i = 0; i < request.Series.Count; ++i)
{
if (result.IsChangePoint[i])
{
Console.Write(i);
Console.Write(" ");
}
}
Console.WriteLine();
}
else
{
Console.WriteLine("No change point detected in the series.");
}
#endregion
}
