flaredetector: add algorithm to detect start/end of possible flares

main/flaredetector/flaredetector.py

@@ -7,3 +7,39 @@ def GaussExpo(x, Peak, l, w):
     res1 = res1[:peakX]
     res2 = Peak * np.exp(-l * x[peakX:])
     return np.append(res1, res2)
+
+
+def getFlareRange(flux, peakIndex):
+    minInd = -np.inf
+    maxInd = np.inf
+
+    maxDelta = 0.005
+    meanVal = 1
+    maxBacklog = 20
+    maxForwardlog = 100
+    
+    deltaCount = 0
+    delta = 100
+    prevFlux = flux[peakIndex]
+    for i in range(peakIndex-1, peakIndex - maxBacklog, -1):
+        delta = prevFlux - flux[i]
+        if(delta < maxDelta and abs(flux[i] - meanVal) < maxDelta):
+            deltaCount += 1
+            if(deltaCount > 3):
+                minInd = i
+                break
+        prevFlux = flux[i]
+
+    deltaCount = 0
+    delta = 100
+    prevFlux = flux[peakIndex]
+    for i in range(peakIndex+1, peakIndex + maxForwardlog, 1):
+        delta = prevFlux - flux[i]
+        if(delta < maxDelta and abs(flux[i] - meanVal) < maxDelta):
+            deltaCount += 1
+            if(deltaCount > 3):
+                maxInd = i
+                break
+        prevFlux = flux[i]
+
+    return minInd, maxInd