help

[Luiza Stoffel]

hello!
has anyone had this problem? does anyone know how to help?

thanks!

[Bierlaire Michel]

On which platform is it? Windows? 

On 23 Aug 2022, at 05:03, Luiza Stoffel <stoff...@gmail.com> wrote:

hello!
has anyone had this problem? does anyone know how to help?

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thanks!

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[Bierlaire Michel]

Although they have been tested before being uploaded, it seems that the executables for Windows did not include a DLL. 

I have now uploaded a new set of executables that include the DLL. I had to label them 3.2.10, although it is identical to 3.2.9. 

It seems to have solved the problem.

Can you please confirm that it works for you? 

Thanks,

Michel

On 23 Aug 2022, at 05:03, Luiza Stoffel <stoff...@gmail.com> wrote:

hello!
has anyone had this problem? does anyone know how to help?

[Bierlaire Michel]

Did you try these suggestions?

https://stackoverflow.com/questions/66060487/valueerror-numpy-ndarray-size-changed-may-indicate-binary-incompatibility-exp

On 23 Aug 2022, at 16:45, stoff...@gmail.com wrote:

Now, this message appears: 

"ValueError: numpy.ndarray size changed, may indicate binary incompatibility. Expected 96 from C header, got 88 from PyObject"

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Att,

Luiza Stoffel

[Rodrigo Tapia]

Hi all,

Had the same issue  ( "ValueError: numpy.ndarray size changed, may indicate binary incompatibility. Expected 96 from C header, got 88 from PyObject" )  today and I did the following:

1. pip uninstall biogeme
2. pip uninstall numpy
   
3. pip install numpy
4. conda update --all
5. pip install biogeme

Steps 2 and 3 might be redundant. This was done in a new laptop with Windows 11.

Hope this helps

[Siti Fadilah]

Dear all,

I just moved from macOS to Windows and the biogeme package has been installed very well. However, when I tried to run one of the examples attached to this URL:  Biogeme (epfl.ch), I also got the same error, even the NumPy itself worked!

I have tried countless times to uninstall and install the biogeme and NumPy, but it has not been solved yet.

Please help me to overcome this issue.

Thank you

[Bierlaire Michel]

On 15 Sep 2022, at 10:30, Siti Fadilah <srfad...@gmail.com> wrote:

Dear all,

I just moved from macOS to Windows

That’s definitely not a good idea ;-)

and the biogeme package has been installed very well. However, when I tried to run one of the examples attached to this URL:  Biogeme (epfl.ch), I also got the same error, even the NumPy itself worked!

I have tried countless times to uninstall and install the biogeme and NumPy, but it has not been solved yet.

Create a brand new environment with python 3.9:

conda create -n myenv python=3.9 pip numpy

conda activate myenv

Then, install the fiollowing packages: 

pip install pandas tqdm scipy cython biogeme

Note that python 3.10 should work as well, although some issues have been reported. 

To view this discussion on the web visit https://groups.google.com/d/msgid/biogeme/1d875669-a005-46bb-9d16-8ce6cac35b68n%40googlegroups.com.
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[Siti Fadilah]

Dear Prof. Bierlaire,

Finally, it works! Thank you for providing the solution. 

Best regards,

Siti

[Rim]

Dear all,

Is anyone still encountering the same error message?

ValueError: numpy.ndarray size changed, may indicate binary incompatibility. Expected 96 from C header, got 88 from PyObject

I was running the 01logit.py example code on windows with Python 3.9.12 and biogeme 3.2.10. I have already tested running the solutions mentioned above in the anaconda prompt but I still have the same error message.
Thank you in advance for any help!Rim