Question: Is incremental addition and deletion supported? about ngt HOT 4 CLOSED

You can remove and add objects.

Append:
https://github.com/yahoojapan/NGT/tree/master/bin/ngt#append
https://github.com/yahoojapan/NGT/blob/master/python/README-ngtpy.md#insert

Remove:
https://github.com/yahoojapan/NGT/tree/master/bin/ngt#remove
https://github.com/yahoojapan/NGT/blob/master/python/README-ngtpy.md#remove

from ngt.

What's the difference between append and insert?
https://github.com/yahoojapan/NGT/wiki/Cpp-Quick-Reference#size_t-appendstdvectortype-object
https://github.com/yahoojapan/NGT/wiki/Cpp-Quick-Reference#size_t-insertstdvectortype-object

If the index is constructed with read only mode, is it able to incrementally add or remove?

Many thanks

from ngt.

NGT has an object list to manage objects. append() always adds the given object at the end of the list. The retuned object ID always increases by one for each appending. If the list has no empty entries for removed objects, insert() is the same as append(). However, if the list has empty entries for removed objects, insert() inserts the given object into the empty entry to save the memory space. Note that the ID of the given object must be discontinuous, because the empty entry ID is assigned to the given object.

You cannot construct the index with read only mode.

from ngt.

NGT has an object list to manage objects. append() always adds the given object at the end of the list. The retuned object ID always increases by one for each appending. If the list has no empty entries for removed objects, insert() is the same as append(). However, if the list has empty entries for removed objects, insert() inserts the given object into the empty entry to save the memory space. Note that the ID of the given object must be discontinuous, because the empty entry ID is assigned to the given object.

You cannot construct the index with read only mode.

Get it! Thanks for your prompt reply.

from ngt.