pattern: Moved minum subtraction after cubic spliine interpolation in…

… .get_uniform

xrdpattern/pattern/db.py

@@ -127,7 +127,7 @@ def show_all(self, single_plot : bool = False, limit_patterns : int = 100, title
             data = [p.get_pattern_data() for p in patterns]
             fig, ax = plt.subplots(dpi=600)
             for x, y in data:
-                ax.plot(x, y, linewidth=0.25, alpha=0.75)
+                ax.plot(x, y, linewidth=0.25, alpha=0.75, linestyle='--')
 
             ax.set_xlabel(r'$2\theta$ [$^\circ$]')
             ax.set_ylabel('Standardized relative intensity (a.u.)')

xrdpattern/pattern/pattern.py

@@ -61,13 +61,16 @@ def _get_uniform(self, start_val : float, stop_val : float, num_entries : int, c
         x = np.array(self.two_theta_values)
         y = np.array(self.intensities)
         x, y = self.to_strictly_increasing(x, y)
-        y -= np.min(y)
 
         cs = CubicSpline(x, y)
         std_intensities = cs(std_angles)
         below_start_indices = np.where(std_angles < start)[0]
         above_end_indices = np.where(std_angles > end)[0]
 
+        indices_in_range = np.where((std_angles >= start) & (std_angles <= end))[0]
+        range_min = np.min(std_intensities[indices_in_range])
+        std_intensities -= range_min
+
         if constant_padding:
             below_start, after_end = y[0], y[-1]
         else: