Initial commit - Added DataRetrieval and SignalProcessing classes

main.py

 import scipy.io
+from scipy.signal import butter, filtfilt
 
 def load_emg_data(file_path):
 
@@ -28,4 +29,32 @@ chosen_muscles = {
     'rectus_fomoris': 0,
     'tibialis_anterior': 7
 }
-print(f"Gekozen spieren: {chosen_muscles}")
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+print(f"Gekozen spieren: {chosen_muscles}")
+
+class DataRetrieval:
+    def __init__(self, file_path):
+        self.file_path = file_path
+        self.emg_data = None
+        self.channel_names = None
+    
+    def load_data(self):
+        mat_data = scipy.io.loadmat(self.file_path)
+        self.emg_data = mat_data['emg_data_walking']
+        self.channel_names = emg_data['data_headers'][0][0]
+        self.channel_names = [ch[0] for ch in self.channel_names[0]]
+
+    def get_channel_names(self):
+        return self.channel_names
+    
+class SignalProcessing:
+    def __init__(self, emg_data, fs):
+        self.emg_data = emg_data
+        self.fs = fs
+
+    def bandpass_filter(self, data, lowcut, highcut):
+            #komt nog filters
+         pass
+
+    def power_spectral_analysis(self, data):
+            #methode
+        pass
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vraag3.py

-t = "hoi"
-print(t)
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vraag4.py

-import numpy as np
-import scipy.signal as signal
-
-class Dataretrieval:
-    def __init__(self, filiepath: str):
-        self.filepath = filepath
-        self.data = None
-        self.sampling_rate
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