Flushing Operation on Indexes

[achapkowski]

I see on the Spatial index, there is an option to close the index file, is there a way to flush?

Per Python Doc:

Flush the write buffers of the stream if applicable. This does nothing for read-only and non-blocking streams.

I think this would help for the creation of very large spatial indexes, so you can write very large indexes to disk without holding everything in memory before writing.

Desired Workflow:

from rtree import Index
idx = Index('rtree.index')

for cnt, g in enumerate(geoms):
    idx.insert(cnt, g.bounds())
    if cnt == 10000:
         idx.flush()

I don't know if this is possible since it's just a wrapper on the c libraries, but I figured I'd ask here first.

Thanks

[hobu]

There is no flush method on the Python implementation, but there is one in the libspatialindex C API called Index_Flush that could be wrapped and used. You might also get the same effect by forcing the index to close and open again.

[hobu]

Added in #119