Cython type

[daveb-dev]

Subject of the issue

Bug in cython wrapper between type

Error : File cythondensity.pyx:21, in dadapy.cython.cython_density._compute_kstar() ValueError: Buffer dtype mismatch, expected 'DTYPE_t' but got 'long long'

Your environment

• OS: Win, Linux, OS
• Python version: 3.9
• Package Version : master

Steps to reproduce

Tell us how to reproduce this issue. Simple reproducible example

import numpy as np
X = np.random.rand(1000,3).astype(np.float32)
cl = dadapy.Clustering(coordinates=X)
cl.compute_density_kstarNN()

Expected behaviour

compute kstar that is necessary for clustering.

Actual behaviour

Error in type casting

[AldoGl]

Hi @daveb-dev, thank you for your issue.

Unfortunately I am unable to reproduce your error. I am on MacOS 12.6.2 and I tried the following:

1) create a fresh 3.9 environment either with miniconda or venv (e.g., by running python3 -m venv . and source bin/activate) 2) install dadapy either via pip install dadapy or by running pip install . in the latest commit of the main branch 3) run your command

import dadapy
import numpy as np
X = np.random.rand(1000,3).astype(np.float32)
cl = dadapy.Clustering(coordinates=X)
cl.compute_density_kstarNN()

Everything works fine for me. Can you give more details on the error you get (perhaps also via copying and pasting it) and the steps you followed to get it?

[daveb-dev]

i fix it. It is related to windows compiler 3.9. It work in python 3.11, it depends on windows-cython. The bug is not reproducible in ubuntu nor Mac OS.

[AldoGl]

Thank you @daveb-dev for making us aware of this issue. In fact, none of the main maintainers develops on Windows. I am glad the problem disappeared with python 3.11!