Fix one remaining data type.

Signed-off-by: Daniel Scheffler <danschef@gfz-potsdam.de>

specclassify/classifiers/sam.py

@@ -60,7 +60,7 @@ class SAM_Classifier(_ImageClassifier):
         # normalize input data because SAM asserts only data between -1 and 1
         train_spectra_norm, tileimdata_norm = normalize_endmembers_image(endmembers, image)
 
-        angles = np.zeros((image.shape[0], image.shape[1], n_samples), np.float)
+        angles = np.zeros((image.shape[0], image.shape[1], n_samples), float)
         # if np.std(tileimdata) == 0:  # skip tiles that only contain the same value
 
         # loop over all training spectra and compute spectral angle for each pixel