docs(kepler-problem): adjust kepler demo time interval and animation …

…speed

#82

docs/tutorials/kepler_problem.py

@@ -55,7 +55,8 @@
 # We define the time steps for a Kepler system. In this example, we create 401 time steps, also with some some negative timestamps for a more symmetric trajectory.
 
 # %%
-t = np.linspace(-20, 20, 401)
+# t = np.linspace(-20, 20, 401)
+t = np.arange(-20, 20, 0.125)
 
 # %% [markdown]
 # Orbit time series data is generated by calling the object `k2d`, as the data generation is done in the `__call__` method.
@@ -80,7 +81,6 @@ def visualize_orbit(dataframe: pd.DataFrame) -> go.Figure:
         r="r",
         theta="phi_degree",
         hover_data=["t", "r", "phi"],
-        text="t",
         start_angle=0,
         animation_frame="t",
         color_discrete_sequence=["red"],
@@ -106,6 +106,9 @@ def visualize_orbit(dataframe: pd.DataFrame) -> go.Figure:
 
     fig.add_traces(trajectory_traces)
 
+    fig.layout.updatemenus[0].buttons[0].args[1]["frame"]["duration"] = 50
+    fig.layout.updatemenus[0].buttons[0].args[1]["transition"]["duration"] = 50
+
     return fig
 
 
@@ -149,7 +152,7 @@ def visualize_orbit(dataframe: pd.DataFrame) -> go.Figure:
             "ecc": 2,
             "parameter": 1.0,
         },
-    )(t=np.linspace(-5, 5, 101)),
+    )(t=np.arange(-5, 5, 0.125)),
 ).show()
 
 # %% [markdown]