Map centre latitude [-90, 90].
Map centre longitude [-180, 180].
Map zoom level [0, 28].
OptionallayersList of layer IDs that the user has explicitly hidden.
OptionalshownList of layer IDs that the user has manually shown (not part of the active theme).
OptionalfilterActive text filter value.
OptionalcategoriesActive taxonomy filter — flat category + sub-category value set (gl_cats).
OptionaltagsActive tag filter (list of selected tag values).
OptionalratingMinimum rating filter (0 = no filter).
OptionalthemeActive data theme ID (e.g. "tourism", "administration").
Snapshot of the serializable map state. All fields except
lat,lng,zoomare optional.