clean up minor warnings

kwave/reconstruction/beamform.py

@@ -155,7 +155,8 @@ def focus(kgrid, input_signal, source_mask, focus_position, sound_speed):
          input_signal_mat:  matrix of time series following the source points
     """
 
-    assert not np.all(kgrid.t_array == 'auto'), "kgrid.t_array must be defined."
+    assert not isinstance(kgrid.t_array, str), "kgrid.t_array must be a numeric array."
+
     if isinstance(sound_speed, int):
         sound_speed = float(sound_speed)
 

kwave/utils/mapgen.py

@@ -205,7 +205,7 @@ def make_cart_bowl(bowl_pos: np.ndarray, radius: float, diameter: float, focus_p
     bowl = R @ p0 + b
 
     # plot results
-    if plot_bowl:
+    if plot_bowl is True:
         # select suitable axis scaling factor
         _, scale, prefix, unit = scale_SI(np.max(bowl))
 
@@ -558,6 +558,8 @@ def make_cart_sphere(radius: float, num_points: int, center_pos: Vector = Vector
     r = np.sqrt(1 - (y ** 2))
     phi = k * inc
 
+    assert num_points > 0, "num_points must be greater than 0"
+
     # create the sphere
     sphere = radius * np.concatenate([np.cos(phi) * r[np.newaxis, :], y[np.newaxis, :], np.sin(phi) * r[np.newaxis, :]])
 
@@ -2968,7 +2970,7 @@ def make_cart_spherical_segment(bowl_pos: np.ndarray, radius: float, inner_diame
     segment = R @ p0 + b
 
     # plot results
-    if plot_bowl:
+    if plot_bowl is True:
         _, scale, prefix, unit = scale_SI(np.max(segment))
 
         # create the figure