Dataviz Sunburst graph- Documentation needed

[timbo-barnes]

There's needs to be updated documentation for creation of sunburst graphs.
i.e.
If I have a table with the following format:

type	status	area_ha
Blanking	Confirmed	12.1
Blanking	Archived	2.5
Spraying	Archive	25.5
Spraying	Confirmed	31.0
Spraying	Confirmed	32.8
Blanking	Archive	65.1

What should the Lizmap configuration be to show a sunburst graph?
1st level of the 'donut': proportions of area of Confirmed spraying and blanking
2nd Level of the 'donut': proportions of area of Archived spraying and Blanking

[mdouchin]

Sunburst plot type can be used if you have a kind of "parent/child" relation between values in two different columns.
For example, for a land use layer, you could have this attribute table:

category	subcategory	area	subcategory_color
agri	vineyard	0.4	green
agri	corn	2.3	yellow
water	lake	4.5	blue
water	pond	0.01	lightblue
urban	building	0.4	gray
urban	parking area	1.1	lightgray

In Lizmap, you would configure the sunburst plot with this parameters:

• X field = subcategory (the finest)
• Aggregate = Sum (to sum up the area (Y field) of the following trace, grouped by category and subcategory)
• One single trace with:
  • Y field = area which is a numeric value with the polygon area
  • Z field = category, which contains the "parent" category of the subcategory
  • Optional colour field subcategory_color containing the colour of the subcategory

The resulted plot would look like

[mdouchin]

@timbo-barnes We have modified our land use demo project here:
https://demo.lizmap.com/lizmap/index.php/view/map?repository=features&project=land_use

An example of the sunburst plot is visible for the layer Postes clés

You can use the big blue button Download project to get the project and its data and open it with QGIS to see how the sunburst is configured.

[josemvm]

@mdouchin excellent addition to the documentation! the section on Sunburst charts is clear, concise, and really helpful
iIt makes it much easier to understand how to implement and customize this type of visualization
thanks for improving the overall user experience!

[Gustry]

The idea is to include this comment from @mdouchin into the documentation. For now, it's standing within this ticket and in the demo. It is temporary.

[mdouchin]

I just updated the image above (taken from the Land use demo Lizmap project)

[timbo-barnes]

Fantastic work- thank you!