Add radar plot documentation

source/index.rst

@@ -21,6 +21,7 @@ Welcome to DataPlotly's documentation!
    ternary.rst
    contour.rst
    violin.rst
+   radar.rst
    processing_provider.rst
    from_console.rst
 

source/radar.rst

@@ -0,0 +1,58 @@
+.. _radarplot:
+
+Radar Plot
+==========
+Here you will find the guide to every parameter of the radar plot. If you need
+more generic information please see :ref:`basic_usage`.
+
+This plot does not behave like other DataPlotly plots in the way that each layer feature
+will generate an entire trace (not only one point) built with the ``Y fields`` values (see below).
+
+.. image:: /img/radar/radar.png
+   :scale: 50%
+
+.. figure:: /img/radar/radar-threshold.png
+   :scale: 57%
+
+   radar plot with a threshold enabled (value=2, line type=dash)
+
+
+Plot Properties
+---------------
+``Layer``: the combobox will display all the vector layers loaded in QGIS
+
+``Y label``: the field that will be the label for each radar branch
+
+``Y fields``: the fields that will be the radar plot branches
+
+``Legend title``: the title of the legend
+
+``Marker size``: the size of the marker
+
+``Marker type``: choose between **Points**, **Lines** or **Points and Lines**
+
+``Fill``: choose if the radar polygons are filled or not
+
+``Threshold``: choose to add a constant value line in the plot
+
+``Threshold line type``: if ``Marker type`` is **Lines** or **Points and Lines**, the line type for the Threshold line
+
+``Threshold value``: the constant value for the threshold
+
+``Point Type`` or ``Line Type`` depending on the ``Marker Type`` chosen
+
+``Color scale``: if ``Marker type`` is **Lines** or **Points and Lines**, the color scale for the lines
+
+``Opacity``: transparency level of all the points/lines
+
+Plot Customizations
+-------------------
+``Show Legend``: show the legend of the current plot
+
+``Plot Title``: the plot title
+
+``Title font``: the title font
+
+``X ticks font``: the font along the value axis
+
+``Y label font``: the font of the branches labels