def test_view_of_view(matrix_type, subset_func, subset_func2):
    adata = gen_adata((30, 15), X_type=matrix_type)
    adata.raw = adata
    if subset_func is single_subset:
        pytest.xfail("Other subset generating functions have trouble with this")
    var_s1 = subset_func(adata.var_names, min_size=4)
    var_view1 = adata[:, var_s1]
    var_s2 = subset_func2(var_view1.var_names)
    var_view2 = var_view1[:, var_s2]
    assert var_view2._adata_ref is adata
    obs_s1 = subset_func(adata.obs_names, min_size=4)
    obs_view1 = adata[obs_s1, :]
    obs_s2 = subset_func2(obs_view1.obs_names)
    assert adata[obs_s1, :][:, var_s1][obs_s2, :]._adata_ref is adata

    view_of_actual_copy = adata[:, var_s1].copy()[obs_s1, :].copy()[:, var_s2].copy()

    view_of_view_copy = adata[:, var_s1][obs_s1, :][:, var_s2].copy()

    assert_equal(view_of_actual_copy, view_of_view_copy, exact=True)
def draw(self, context):
        layout = self.layout

        input_prefs = context.user_preferences.inputs

        is_view3d = context.space_data.type == 'VIEW_3D'

        layout.prop(input_prefs, "ndof_sensitivity")
        layout.prop(input_prefs, "ndof_orbit_sensitivity")
        layout.prop(input_prefs, "ndof_deadzone")

        if is_view3d:
            layout.separator()
            layout.prop(input_prefs, "ndof_show_guide")

            layout.separator()
            layout.label(text="Orbit style")
            layout.row().prop(input_prefs, "ndof_view_navigate_method", text="")
            layout.row().prop(input_prefs, "ndof_view_rotate_method", text="")
            layout.separator()
            layout.label(text="Orbit options")
            layout.prop(input_prefs, "ndof_rotx_invert_axis")
            layout.prop(input_prefs, "ndof_roty_invert_axis")
            layout.prop(input_prefs, "ndof_rotz_invert_axis")

        # view2d use pan/zoom
        layout.separator()
        layout.label(text="Pan options")
        layout.prop(input_prefs, "ndof_panx_invert_axis")
        layout.prop(input_prefs, "ndof_pany_invert_axis")
        layout.prop(input_prefs, "ndof_panz_invert_axis")
        layout.prop(input_prefs, "ndof_pan_yz_swap_axis")

        layout.label(text="Zoom options")
        layout.prop(input_prefs, "ndof_zoom_invert")

        if is_view3d:
            layout.separator()
            layout.label(text="Fly/Walk options")
            layout.prop(input_prefs, "ndof_fly_helicopter", icon='NDOF_FLY')
            layout.prop(input_prefs, "ndof_lock_horizon", icon='NDOF_DOM')