How to organize groups in Layer Control

[JohnyCarrot]

Greetings,

I have a polygons which are part of sub groups (FeatureGroupSubGroup) and these sub groups are part of Groups (FeatureGroup).

What i need is "listing" it like on this image:

I need that my groups (shown as "Big group in image) will have sup groups shown like here and that i can either turn of / off whole group or turn off / on each sup group separatly even big groups are off for example. Currently, i have no idea how to do it.

Here is my code :

    chranene_oblasti = folium.FeatureGroup("Chránené oblasti",control=False)
    druhy_stupen = folium.plugins.FeatureGroupSubGroup(chranene_oblasti,name="II. stupeň ochrany")
    treti_stupen = folium.plugins.FeatureGroupSubGroup(chranene_oblasti, name='III. stupeň ochrany')
    stvrty_stupen = folium.plugins.FeatureGroupSubGroup(chranene_oblasti, name="IV. stupeň ochrany")
    piaty_stupen = folium.plugins.FeatureGroupSubGroup(chranene_oblasti, name="V. stupeň ochrany")
    m.add_child(chranene_oblasti)
    m.add_child(druhy_stupen)
    m.add_child(treti_stupen)
    m.add_child(stvrty_stupen)
    m.add_child(piaty_stupen)

Problem description

Problem with this code is that it will just add Feature group (big group) as normal "object" in Layer control and it will either turn it off / on, as individual sub groups (which are not shown like on image above, but on the same level) cant be controlled then.

Expected Output

Output of folium.__version__

'0.14.0'

[IndigoWizard]

@JohnyCarrot
At the current moment there's no such way of having a sort of hierarchy display of layers on the layer panel. A recent addition to folium since version 0.14.0 was the GroupedLayerControl #1592 which allows to spawn a separate layer panel (on top/bottom of the main panel) and can contain multiple layers under a group title (just text, no actual hierarchy group layer control).

Link to official folium documentaion notebook example: GroupedLayerControl

Flaws

• It can't add raster layers to the groups (e.g: "gee" google earth engine layers) as far as I tried.
• If you want one "main big group" to control all sub groups it must be in the main layer panel (do add_to(m) instead of the plugin).
• If you want Main Sub Group control of all layers in that subgroup, it needs to be the last one stacked in it's layer group (see image 2. "All Group A" / "All Group B" )
  

NOTE:

The styling is not included in the plugin or folium. I done it to better illustrate and clarify the context.
You still can use Branca + CSS to tweak the style if wanted.

[JohnyCarrot]

Thanks you so much...

This is it, even if i cant control sub groups, its not that big deal.

Love you

[zxdawn]

Ha, it would be nice to have big groups to turn on/off all subgroups inside and each subgroup can be controlled independently.