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Weighted least squares meshless interpolator and differentiator.

License: BSD 2-Clause "Simplified" License

Python 2.81% C 0.03% Cython 97.16%
numerical interpolation differentiation curve-fitting least-squares meshless numpy cython python python2

python-wlsqm's Issues

Python 3.6 build error

Fails to compile under Python 3.6. See #2.

High priority now that Python 3.4 official support has ended (in March 2019), and many new-ish installed pythons are at least 3.6.

ValueError: Buffer and memoryview are not contiguous in the same dimension.

I try to use this code to form the derivates of my meshless scattered data cloud of CFD.
x is the ndarray[37817,2].
F is the value of x ndarray[37817,].

when input the data in the expertsolver_example.py.
the error occurs:

/home/wjq/MeshlessDerivatives/main.py
Traceback (most recent call last):
File "/home/wjq/MeshlessDerivatives/main.py", line 183, in
main()
File "/home/wjq/MeshlessDerivatives/main.py", line 177, in main
X,Y,Z = project_onto_regular_grid_2D(x, F, fit_order=2, nk=50)
File "/home/wjq/MeshlessDerivatives/main.py", line 92, in project_onto_regular_grid_2D
solver.prepare( xi=x, xk=x[hoods] ) # generate problem matrices from the geometry of the point cloud
File "wlsqm/fitter/expert.pyx", line 399, in wlsqm.fitter.expert.ExpertSolver.prepare
ValueError: Buffer and memoryview are not contiguous in the same dimension.

Process finished with exit code 1

Thanks!

build error

brilliant work！but I have some problems
python3.6
pip install wlsqm

wlsqm/utils/lapackdrivers.pyx:1740:38: Converting to Python object not allowed without gil

Error compiling Cython file:
------------------------------------------------------------
...
    dgesvd( &jobu, &jobvt, &m, &n, A, &m, S, <double*>0, &ldu, <double*>0, &ldvt, &worksize, &lwork, &info )
    lwork  = <int>worksize
    cdef double* p_work = <double*>malloc( lwork*sizeof(double) )

    # LDA(A) = n
    dgesvd( &jobu, &jobvt, &m, &n, A, &m, S, <double*>0, &ldu, <double*>0, &ldvt, p_work, &lwork, &info )
                                         ^
------------------------------------------------------------

wlsqm/utils/lapackdrivers.pyx:1740:42: Converting to Python object not allowed without gil

Error compiling Cython file:
------------------------------------------------------------
...
    dgesvd( &jobu, &jobvt, &m, &n, A, &m, S, <double*>0, &ldu, <double*>0, &ldvt, &worksize, &lwork, &info )
    lwork  = <int>worksize
    cdef double* p_work = <double*>malloc( lwork*sizeof(double) )

    # LDA(A) = n
    dgesvd( &jobu, &jobvt, &m, &n, A, &m, S, <double*>0, &ldu, <double*>0, &ldvt, p_work, &lwork, &info )
                                            ^
------------------------------------------------------------

wlsqm/utils/lapackdrivers.pyx:1740:45: Converting to Python object not allowed without gil

Error compiling Cython file:
------------------------------------------------------------
...
    dgesvd( &jobu, &jobvt, &m, &n, A, &m, S, <double*>0, &ldu, <double*>0, &ldvt, &worksize, &lwork, &info )
    lwork  = <int>worksize
    cdef double* p_work = <double*>malloc( lwork*sizeof(double) )

    # LDA(A) = n
    dgesvd( &jobu, &jobvt, &m, &n, A, &m, S, <double*>0, &ldu, <double*>0, &ldvt, p_work, &lwork, &info )
                                                        ^
------------------------------------------------------------

wlsqm/utils/lapackdrivers.pyx:1740:57: Converting to Python object not allowed without gil

Error compiling Cython file:
------------------------------------------------------------
...
    dgesvd( &jobu, &jobvt, &m, &n, A, &m, S, <double*>0, &ldu, <double*>0, &ldvt, &worksize, &lwork, &info )
    lwork  = <int>worksize
    cdef double* p_work = <double*>malloc( lwork*sizeof(double) )

    # LDA(A) = n
    dgesvd( &jobu, &jobvt, &m, &n, A, &m, S, <double*>0, &ldu, <double*>0, &ldvt, p_work, &lwork, &info )
                                                              ^
------------------------------------------------------------

wlsqm/utils/lapackdrivers.pyx:1740:63: Converting to Python object not allowed without gil

Error compiling Cython file:
------------------------------------------------------------
...
    dgesvd( &jobu, &jobvt, &m, &n, A, &m, S, <double*>0, &ldu, <double*>0, &ldvt, &worksize, &lwork, &info )
    lwork  = <int>worksize
    cdef double* p_work = <double*>malloc( lwork*sizeof(double) )

    # LDA(A) = n
    dgesvd( &jobu, &jobvt, &m, &n, A, &m, S, <double*>0, &ldu, <double*>0, &ldvt, p_work, &lwork, &info )
                                                                          ^
------------------------------------------------------------

wlsqm/utils/lapackdrivers.pyx:1740:75: Converting to Python object not allowed without gil

Error compiling Cython file:
------------------------------------------------------------
...
    dgesvd( &jobu, &jobvt, &m, &n, A, &m, S, <double*>0, &ldu, <double*>0, &ldvt, &worksize, &lwork, &info )
    lwork  = <int>worksize
    cdef double* p_work = <double*>malloc( lwork*sizeof(double) )

    # LDA(A) = n
    dgesvd( &jobu, &jobvt, &m, &n, A, &m, S, <double*>0, &ldu, <double*>0, &ldvt, p_work, &lwork, &info )
                                                                                 ^
------------------------------------------------------------

wlsqm/utils/lapackdrivers.pyx:1740:82: Converting to Python object not allowed without gil

Error compiling Cython file:
------------------------------------------------------------
...
    dgesvd( &jobu, &jobvt, &m, &n, A, &m, S, <double*>0, &ldu, <double*>0, &ldvt, &worksize, &lwork, &info )
    lwork  = <int>worksize
    cdef double* p_work = <double*>malloc( lwork*sizeof(double) )

    # LDA(A) = n
    dgesvd( &jobu, &jobvt, &m, &n, A, &m, S, <double*>0, &ldu, <double*>0, &ldvt, p_work, &lwork, &info )
                                                                                         ^
------------------------------------------------------------

wlsqm/utils/lapackdrivers.pyx:1740:90: Converting to Python object not allowed without gil

Error compiling Cython file:
------------------------------------------------------------
...
    dgesvd( &jobu, &jobvt, &m, &n, A, &m, S, <double*>0, &ldu, <double*>0, &ldvt, &worksize, &lwork, &info )
    lwork  = <int>worksize
    cdef double* p_work = <double*>malloc( lwork*sizeof(double) )

    # LDA(A) = n
    dgesvd( &jobu, &jobvt, &m, &n, A, &m, S, <double*>0, &ldu, <double*>0, &ldvt, p_work, &lwork, &info )
                                                                                                 ^
------------------------------------------------------------

wlsqm/utils/lapackdrivers.pyx:1740:98: Converting to Python object not allowed without gil
Traceback (most recent call last):
  File "setup.py", line 220, in <module>
    gdb_debug = debug ),
  File "/home/duan/miniconda3/envs/cv/lib/python3.6/site-packages/Cython/Build/Dependencies.py", line 1097, in cythonize
    cythonize_one(*args)
  File "/home/duan/miniconda3/envs/cv/lib/python3.6/site-packages/Cython/Build/Dependencies.py", line 1220, in cythonize_one
    raise CompileError(None, pyx_file)
Cython.Compiler.Errors.CompileError: wlsqm/utils/lapackdrivers.pyx

use python3.4
successful installed, but

>>> import wlsqm
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/duan/PycharmProjects/vessel/python-wlsqm/wlsqm/__init__.py", line 26, in <module>
    from .fitter.defs   import *  # definitions (constants) (common)
ImportError: No module named 'wlsqm.fitter.defs'
>>>

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The contact email in setup.py is outdated. PyPI uses it to provide the link to email the maintainer. Update it for the next release.

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