Add documentation on newly-added nad parameters

Signed-off-by: Sophie Frasnedo <[email protected]>

docs/user_guide/network_visualization.rst

@@ -65,6 +65,23 @@ Note that similarly to single-line diagrams, a loadflow can be run before writin
     >>> result = pp.loadflow.run_ac(network)
     >>> network.write_network_area_diagram_svg('ieee9.svg')
 
+Network-area diagrams can be customized through NadParameters :
+
+.. code-block:: python
+
+    >>> network = pp.network.create_ieee14()
+    >>> nad = network.get_network_area_diagram('VL6', nad_parameters=NadParameters(edge_name_displayed=True, id_displayed=True, edge_info_along_edge=False, power_value_precision=1, angle_value_precision=0, current_value_precision=1, voltage_value_precision=0, bus_legend=False, substation_description_displayed=True))
+
+    - edge_name_displayed: if true, names along lines and transformer legs are displayed (default value false)
+    - id_displayed: if true, the equipment ids are displayed. If false, the equipment names are displayed (if a name is null, then the id is displayed) (default value false)
+    - edge_info_along_edge: if true, the edge information (P or Q values for example) is displayed alongside the edge. If false, the edge information is displayed perpendicularly to the edge (default value true)
+    - power_value_precision: number of digits after the decimal point for power values (default value 0)
+    - angle_value_precision: number of digits after the decimal point for angle values (default value 1)
+    - current_value_precision: number of digits after the decimal point for current values (default value 0)
+    - voltage_value_precision: number of digits after the decimal point for voltage values(default value 1)
+    - bus_legend: if true, angle and voltage values associated to a voltage level are displayed in a text box. If false, only the voltage level name is displayed (default value true)
+    - substation_description_displayed : if true, the substation name is added to the voltage level info on the diagram (default value false)
+
 In order to get a list of the displayed voltage levels from an input voltage level (or an input list of voltage levels) and a depth:
 
 .. code-block:: python