Adding ZeroSuppressionToRaw method into rawSignal

Author: juanangp

inc/TRestRawSignal.h

@@ -159,6 +159,8 @@ class TRestRawSignal {
 
     void InitializePointsOverThreshold(const TVector2& thrPar, Int_t nPointsOver, Int_t nPointsFlat = 512);
 
+    void ZeroSuppressionToRaw();
+
     UInt_t GetSeed() const { return fSeed; }
 
     Double_t GetIntegral();

src/TRestRawSignal.cxx

@@ -982,6 +982,20 @@ void TRestRawSignal::WriteSignalToTextFile(const TString& filename) {
     fclose(file);
 }
 
+///////////////////////////////////////////////
+/// \brief This method transforms zero suppression
+/// raw data into a raw data event using the firs
+///
+void TRestRawSignal::ZeroSuppressionToRaw() {
+    Short_t offset = 0;
+    for (int i = 0; i < GetNumberOfPoints(); i++) {
+        const Short_t val = fSignalData[i];
+        if (val == 0) continue;
+        if (offset == 0) offset = val;
+        fSignalData[i] = val - offset;
+    }
+}
+
 ///////////////////////////////////////////////
 /// \brief It prints the signal data on screen.
 ///