Refactor app.py for improved layout and functionality

app.py

@@ -1,8 +1,7 @@
 # AUTOGENERATED! DO NOT EDIT! File to edit: app.ipynb.
 
 # %% auto 0
-__all__ = ['csv_file', 'data', 'variable_widget', 'window_widget', 'sigma_widget', 'bound_plot', 'first_app', 'transform_data',
-           'create_plot']
+__all__ = ['csv_file', 'data', 'variable_widget', 'window_widget', 'sigma_widget', 'bound_plot', 'transform_data', 'create_plot']
 
 # %% app.ipynb 1
 import panel as pn
@@ -13,7 +12,9 @@ import numpy as np
 
 
 # %% app.ipynb 2
-pn.extension(design='material')
+pn.extension(
+    template="fast",
+)
 
 csv_file = ("https://raw.githubusercontent.com/holoviz/panel/main/examples/assets/occupancy.csv")
 data = pd.read_csv(csv_file, parse_dates=["date"], index_col="date")
@@ -37,17 +38,13 @@ def create_plot(variable="Temperature", window=30, sigma=10):
     )
 
 # %% app.ipynb 4
-create_plot(variable='Temperature', window=20, sigma=10)
-
-# %% app.ipynb 5
 variable_widget = pn.widgets.Select(name="variable", value="Temperature", options=list(data.columns))
 window_widget = pn.widgets.IntSlider(name="window", value=30, start=1, end=60)
 sigma_widget = pn.widgets.IntSlider(name="sigma", value=10, start=0, end=20)
 
-# %% app.ipynb 6
+# %% app.ipynb 5
 bound_plot = pn.bind(create_plot, variable=variable_widget, window=window_widget, sigma=sigma_widget)
 
-# %% app.ipynb 7
-first_app = pn.Column(variable_widget, window_widget, sigma_widget, bound_plot)
-
-first_app.servable()
+# %% app.ipynb 6
+pn.Column(variable_widget, window_widget, sigma_widget).servable(target="sidebar")
+pn.Row(bound_plot).servable(target="main")