COVAR

semver fix


VAR test fix


new: COVAR, ZSCORE, CORR, LINREG


versioning


refactoring

Source/Feeds/Yahoo_Feed.cs

@@ -9,12 +9,13 @@ Yahoo Finance - Free API feed to collect daily market quotes
         Period: number of days of collected history (default: 252)
     Usage:
         Yahoo_Feed ticker = new("MSFT", 20)
-    
+
 </summary> */
 
 public class Yahoo_Feed : TBars
 {
     public Yahoo_Feed(string Symbol = "IBM", int Period =  252) {
+        Period = (int)(Period*1.45);
         string requestUrl = "https://query1.finance.yahoo.com/v8/finance/chart/"+
             Symbol+"?interval=1d&period1="+
             (int)new DateTimeOffset(DateTime.UtcNow.AddDays(-Period+1)).ToUnixTimeSeconds()+"&period2="+
@@ -22,7 +23,7 @@ public class Yahoo_Feed : TBars
         System.Net.Http.HttpClient client = new();
         var msg = client.GetStringAsync(requestUrl).Result;
         var jresult = JsonSerializer.Deserialize<JsonDocument>(msg).RootElement;
-        
+
         jresult.TryGetProperty("chart",out JsonElement json);
         json.TryGetProperty("result",out json);
         json[0].TryGetProperty("timestamp",out JsonElement datetime);
@@ -33,7 +34,7 @@ public class Yahoo_Feed : TBars
         json[0].TryGetProperty("low",out JsonElement low);
         json[0].TryGetProperty("close",out JsonElement close);
         json[0].TryGetProperty("volume",out JsonElement volume);
-        
+
         for (int i=0; i<datetime.GetArrayLength(); i++) {
             DateTime d = DateTimeOffset.FromUnixTimeSeconds(long.Parse(datetime[i].GetRawText())).DateTime;
             double o = Math.Round(double.Parse(open[i].GetRawText()),3);