index - Data Stores¶
index submodule provides efficient storage containers for
preprocessed OSM data.
Node Location Storage¶
Node location can be cached in a
LocationTable. There are different
implementations available which should be choosen according to the size of
data and whether or not the cache should be permanent. See the Osmium manual
for a detailed explaination. The compiled in types can be listed with the
map_types function, new storages can be created with
map_types() → object :¶
Return a list of strings with valid types for the location table.
create_map((str)map_type) → LocationTable :¶
Create a new location store. The string parameter takes the type and, where required, additional arguments separated by comma. For example, to create a array cache backed by a file
foo.store, the map_type should be
A map from a node ID to a location object. This implementation works only with positive node IDs.
clear((LocationTable)self) → None :¶
Remove all entries from the location table.
get((LocationTable)self, (int)id) → Location :¶
Return the location for a given id.
set((LocationTable)self, (int)id, (Location)loc) → None :¶
Set the location for a given node id.
used_memory((LocationTable)self) → int :¶
Return the size (in bytes) currently allocated by this location table.