Added frequency domain data to measurement class.

src/nqrduck_spectrometer/measurement.py

@@ -1,13 +1,23 @@
+from nqrduck.helpers.signalprocessing import SignalProcessing as sp
+
 class Measurement():
     """This class defines how measurement data should look. 
     It includes pulse parameters necessary for further signal processing.
     Every spectrometer should adhere to this data structure in order to be compatible with the rest of the nqrduck.
+
+    Attributes:
+        tdx (np.array): Time axis for the x axis of the measurement data.
+        tdy (np.array): Time axis for the y axis of the measurement data.
+        target_frequency (float): Target frequency of the measurement.
+        xf (np.array): Frequency axis for the x axis of the measurement data.
+        yf (np.array): Frequency axis for the y axis of the measurement data.
     """
 
     def __init__(self, tdx, tdy, target_frequency) -> None:
         self.tdx = tdx
         self.tdy = tdy
         self.target_frequency = target_frequency
+        self.fdx, self.fdy = sp.fft(tdx, tdy)
 
     # Measurement data
     @property
@@ -28,6 +38,24 @@ class Measurement():
     def tdy(self, value):
         self._tdy = value
 
+    @property
+    def fdx(self):
+        """Frequency axis for the x axis of the measurement data."""
+        return self._fdx
+    
+    @fdx.setter
+    def fdx(self, value):
+        self._fdx = value
+
+    @property
+    def fdy(self):
+        """Frequency axis for the y axis of the measurement data."""
+        return self._fdy
+    
+    @fdy.setter
+    def fdy(self, value):
+        self._fdy = value
+
     # Pulse parameters
     @property
     def target_frequency(self):