Added Documentation for plotting module

docs/index.rst

@@ -11,6 +11,7 @@ Welcome to QuMADA's documentation!
    device_object
    examples
    mapping_gui
+   utils
    metadata
    qumada
 

docs/utils.rst

@@ -0,0 +1,33 @@
+Other
+=========
+
+Plotting with QuMada
+---------------------------------
+
+QuMada comes with a few useful scripts for quick plotting of results and easier access to QCoDeS datasets.
+You can find the corresponding function in src/qumada/utils/plotting.py and load_from_sqlite.py. 
+
+The function "plot_multiple_datasets()" is useful for plotting multiple curves into one plot. Make sure to load the QCoDeS database you want to plot from in advance.
+You can either provide a list of datasets you want to plot along with the names of the parameters you want to plot,
+or simply leave the datasets argument (and optionally the parameter names empty).
+In the latter case, it will guide you through the process of selecting one or more measurements and the parameters you want to plot.
+
+"plot_multiple_datasets" generates automatic legends, labels the axis correctly, can use different markers for different sweep directions, forwards kwargs for matplotlib and more.
+Check :ref:`API_DOC` or the docstring for more information. An example is shown below, each of the first three panels was created by using "plot_multiple_datasets".
+
+
+.. image:: images/plotting_example.png
+   :alt: Plotting example
+   :width: 400px
+   :align: center
+
+The last panel was created with "plot_2D()". Here, the methods "get_parameter_data" and "pick_measurement" from load_from_sqlite are helpful to retrieve and unpack nested QCoDeS datasets.
+It is possible to create a 2D plot by calling:
+
+.. code:: python
+
+	plot_2D(*get_parameter_data(pick_measurement())
+
+As for plot_multiple_datasets, this will guide you through the selection of a measurement from the current database.
+Check :ref:`API_DOC` or the docstring for more information.
+