files reorganized, measuring devices added

3.5.1 auto/fitting.py

@@ -0,0 +1,11 @@
+from scipy.optimize import curve_fit
+from numpy import tanh
+
+
+def probe(x, I_0, k_0, A):
+    return I_0 * tanh(k_0 / I_0 * x) + A * x
+
+
+def fit(x, y):
+    params = curve_fit(probe, x, y, [50, 10, 1])[0]
+    return params