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Hi, I use pip to install pyflann and my environment is python3.5
when I compile "from pyflann import *", I got an error like this:

from pyflann import *
File "/.../anaconda3/lib/python3.5/site-packages/pyflann/init.py", line 27, in
from index import *
ImportError: No module named 'index'

so what I do next is pip install index, but I found the information: only these python versions are supported: [(2, 6), (2, 7), (3, 2), (3, 3), (3, 4)]

is there any way to use pyflann in python3.5?
Thank a lot

Hello!

Is there a way to feed pyflann.FLANN() with points of different dimensions? For example it could be SURF descriptors of images.

What is the most appropriate way to handle this?
Would it be right to get the maximum length of dataset points and fill with zeros points of smaller dimension? I assume that it is ok, because it doesn`t change the euclidean norm and distance as well.

Thank you!

You should probably remove the *.pyc files from your git repo.

Anybody knows if it supports gpu-acceleration?
(since it only has one static libflann.so, I guess the answer is probably "no")

Maybe the difference is not that much, so it won't be worth it?

Does pyflann support multithreads?
If yes how?

Thanks.

I installed pyflann [on Ubuntu 16.04 python 2.7] using pip but when import pyflann in python, I get the following error:

import pyflann

/usr/local/lib/python2.7/dist-packages/pyflann/init.py in ()
25 #THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26
---> 27 from index import *
28 from io.dataset import load, save
29 try:

/usr/local/lib/python2.7/dist-packages/pyflann/index.py in ()
25 #THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26
---> 27 from bindings.flann_ctypes import *
28 from io.dataset import *
29 import numpy.random as _rn

/usr/local/lib/python2.7/dist-packages/pyflann/bindings/init.py in ()
28 #from pyflann_parameters import parameter_list, algorithm_names
29 #from pyflann_parameters import centers_init_names, log_level_names
---> 30 from flann_ctypes import *

/usr/local/lib/python2.7/dist-packages/pyflann/bindings/flann_ctypes.py in ()
171 flannlib = load_flann_library()
172 if flannlib == None:
--> 173 raise ImportError('Cannot load dynamic library. Did you compile FLANN?')
174
175

ImportError: Cannot load dynamic library. Did you compile FLANN?

Hi,
I'm getting some errors when using Python 3 (3.4.3) (and installing from pip, pyflann 1.6.12).

• I'm getting import errors due to relative imports. The solution is to replace various from foo import * with from .foo import *.
  See also here
  (This should also work in Python 2.)

  specifically:

  • bindings/init.py
  • the pyflann imports in index.py
  • both imports in init.py
  • io/init.py
  • the _dataset imports in io/dataset.py need to be relative as well, e.g from . import binary_dataset

• after fixing these, I get invalid syntax in find_ctypes.py, line 151. The reason is that the except Exception, e syntax was replaced by except Exception as e:.
  In this case, it could just be except Exception:

• same in io/dataset.py, line 61 and hdf5_dataset, line 34+67

• in flann_ctypes, line 201, the exec call needs brackets

• Python 3 no longer contains dict.iteritems and should be replaced by dict.items (in flann_ctypes, l.53 and 78)

(Not sure if this is the right place for these issues, I just followed the pip package to its source.)

Some additional errors which I'm not sure are the fault of Python 3:

• I get an error about flann_parameters missing when __del is called. Apparently, they are deleted before the del call?

With these fixes, pyflann seems to work.

So I don't really know what I'm doing with this package, apologies if this is a error on my end. The error message "Caught exception: Unknown algorithm for choosing initial centers." seems to appear intermittently when trying to chose an algorithm with a string, and no matter what I put in the result is [0, 0].

I am using python 3.6.7 with ipython 7.1.1.

Here is an example;

testset = np.random.rand(1000, 128)
    ...: flann = pyflann.FLANN()
    ...: result, dists = flann.nn(
    ...:     dataset, testset, 5, algorithm="kmeans", branching=32, iterations=7, checks=16)
Caught exception: Unknown algorithm for choosing initial centers.   
#^^ Error here!!!!!!!

In [31]: dataset = np.random.rand(10000, 128)
    ...: testset = np.random.rand(1000, 128)
    ...: flann = pyflann.FLANN()
    ...: result, dists = flann.nn(
    ...:     dataset, testset, 5, algorithm=0, branching=32, iterations=7, checks=16)

In [32]: results
Out[32]: array([0, 0], dtype=int32)

In [33]: dataset = np.random.rand(10000, 128)
    ...: testset = np.random.rand(1000, 128)
    ...: flann = pyflann.FLANN()
    ...: result, dists = flann.nn(
    ...:     dataset, testset, 5, branching=32, iterations=7, checks=16)

In [34]: results
Out[34]: array([0, 0], dtype=int32)

In [35]: dataset = np.random.rand(10000, 128)
    ...: testset = np.random.rand(1000, 128)
    ...: flann = pyflann.FLANN()
    ...: result, dists = flann.nn(
    ...:     dataset, testset, 5, algorithm=0, branching=32, iterations=7, checks=16)

In [36]: dataset = np.random.rand(10000, 128)
    ...: testset = np.random.rand(1000, 128)
    ...: flann = pyflann.FLANN()
    ...: result, dists = flann.nn(
    ...:     dataset, testset, 5, algorithm="kmeans", branching=32, iterations=7, checks=16)
#^^ Same code no error!!!!!!!

In [37]: print(results)
[0 0]