fixed first time retention error

hp4155/memristor/memristor.py

@@ -468,7 +468,7 @@ def on_retention_button_clicked(b):
             filename=f"{sample_series.value}_{field.value}_{DUT.value}.txt"
             file = os.path.join(folder,filename)
             #write header to temp_file
-            write_header(temp_file)
+            write_header(temp_file,sample_series,field,DUT)
             first = False #set first to false irrelvant if it is in the if statement or not
 
         #execute measurement

hp4155/memristor/memristor_buttons.ipynb

@@ -9,7 +9,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "a15bbb4631594bdb8f380bffdde1549e",
+       "model_id": "a39812e577f34a0da594647dc147ded9",
        "version_major": 2,
        "version_minor": 0
       },
@@ -30,7 +30,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "ab2cf0130c54466da63f2540115e045c",
+       "model_id": "cdebaec7420e4adc8b7e82bb4c39c4a8",
        "version_major": 2,
        "version_minor": 0
       },
@@ -51,7 +51,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "812a22ed82f642aba7b01a3c17476f7b",
+       "model_id": "ade51604d0b84969b884180f0030465e",
        "version_major": 2,
        "version_minor": 0
       },
@@ -65,7 +65,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "5296d6d0ac4f45f28e67d93e6a1af5d8",
+       "model_id": "f3c4f677071e442d9800a0d9825adeb6",
        "version_major": 2,
        "version_minor": 0
       },