upd

optifik/minmax.py

@@ -58,7 +58,6 @@ def thickness_from_minmax(wavelengths,
     peaks.sort()
 
     k_values = np.arange(len(peaks))
-    n_over_lambda = refractive_index[peaks][::-1] / wavelengths[peaks][::-1]
 
     if k_values.size < 2:
         # Can't fit if less than two points.
@@ -66,7 +65,10 @@ def thickness_from_minmax(wavelengths,
 
 
     if isinstance(refractive_index, np.ndarray):
-        refractive_index = refractive_index[peaks][::-1]
+        #refractive_index = refractive_index[peaks][::-1]
+        n_over_lambda = refractive_index[peaks][::-1] / wavelengths[peaks][::-1]
+    else:
+        n_over_lambda = refractive_index / wavelengths[peaks][::-1]
 
     if method.lower() == 'ransac':
         residual_threshold = 4e-5

tests/spectra/sample3.yaml

@@ -0,0 +1,72 @@
+author: Emmanuelle Rio
+refractive_index: 1.33
+known_thicknesses:
+  012909.xy: 3975
+  013920.xy: 3952
+  014519.xy: 3863
+  016039.xy: 3795
+  018362.xy: 3646
+  019239.xy: 3602
+  020269.xy: 3302
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+  020908.xy: 3284
+  021402.xy: 3184
+  022248.xy: 2896
+  022768.xy: 3042
+  023927.xy: 2986
+  024507.xy: 2842
+  025777.xy: 2784
+  026577.xy: 2729
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+  030897.xy: 2400
+  032378.xy: 2252
+  033178.xy: 2325
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+  035616.xy: 2032
+  036017.xy: 2109
+  036897.xy: 1937
+  037966.xy: 1899
+  038926.xy: 1908
+  039655.xy: 1802
+  040176.xy: 1810
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