I was able to successfully build an R-Tree spatial index and save it to a file.
from rtree import index
idx = index.Index("gridIndex")
idx.insert(..., ...)
idx.insert(..., ...)
and so on...
Now I can load the saved index and use it:
idx = index.Index('gridIndex')
hits = idx.intersection([x, y], objects=True)
This works only if my index is in the same directory as my python file.
In my case, I'm running the main python file from a different directory:
python path/to/my_file/main.py
Now the index is not loaded, rather it creates an empty index in my working directory.
So how can I load my previously created index and specify its path?
I've tried to load it this way:
idx = index.Index(os.path.join(sys.path[0], 'gridIndex')) # doesn't work
And also this way:
idx = index.Index(os.path.join(sys.path[0], 'gridIndex.dat'))
Which creates a new empty index - two new files in the desired directory: gridIndex.dat.dat and gridIndex.dat.idx
In the documentation I found two methods - dumps() and loads(), but couldn't get it to work.
use the index.Rtree!
something like this :
from rtree import index
idx = index.Rtree('path/to/gridIndex')
hits = idx.intersection([x, y], objects=True)