Convert index back to integer values after where() operation

src/toolbox_scs/detectors/viking.py

@@ -290,6 +290,7 @@ class Viking:
         """
         if key not in data:
             return
+        print('hello')
         x = data.newt_x
         spectra = data[key]
         mask = xr.ones_like(x, dtype=bool)
@@ -300,7 +301,8 @@ class Viking:
                 ranges = self.BL_SIGNAL_RANGE
             for xrange in ranges:
                 mask = mask & ((x < xrange[0]) | (x > xrange[1]))
-        x_bl = x.where(mask, drop=True)
+        x_bl = x.where(mask, drop=True).astype(int)
+        print(x_bl)
         bl = spectra.sel(newt_x=x_bl)
         fit = np.polyfit(x_bl, bl.T, self.BL_POLY_DEG)
         if len(spectra.shape) == 1: