AttributeError: 'GaussianCopula' object has no attribute 'getDimension'

[lvoursl-zz]

Hello!
I think there is some problems with freshness of documentation, because code from examples did not work. So, for example, I am trying to run this code: https://blent-ai.github.io/pycopula/build/html/examples.html#sampling
And I get the following errors:

---------------------------------------------------------------------------
TypeError                                 
Traceback (most recent call last)
<ipython-input-40-bb6934b931b1> in <module>()
----> 1 gaussian = GaussianCopula(dim=2, sigma=[[1, 0.8], [0.8, 1]])
 
TypeError: __init__() got an unexpected keyword argument 'sigma'

And after removing 'sigma' from arguments I've got a different error:

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-38-a14416189e8d> in <module>()
----> 1 sim = simulate(archimedean, 100)

/usr/local/lib/python3.5/dist-packages/pycopula/simulation.py in simulate(copula, n)
     19                 The size of the sample.
     20 	"""
---> 21         d = copula.getDimension()
     22 
     23         X = []

AttributeError: 'GaussianCopula' object has no attribute 'getDimension'

I'm using Python 3.5.2 and downloaded PyCopula using pip.
If you need any help, please, let me know.

[MaximeJumelle]

Hi,
Indeed, I merged a commit from another contributor which proposed to replace some functions and attributes with "more PEP8 convenient" notation. Documentation is not up to date (I need to rebuild it), and now correct use to get copula's dimension is copula.dimension().

In the future I plan to consider it as copula._dimension which is more intuitive in my opinion.

[holyqin]

So we can't run the code now? Is there other way to use the function - GaussianCopula? Thank u for ur
replies~

[judydickey]

I also had this problem. Is there a fix date?

[K7-joker]

You can just change the function name in the source file: ..pycopula/ simulation.py
There are three places need to be modified , getDimension ->dimension, getParameter->get_parameter, inverseGenerator->inverse_generator

[middlec000]

Thank you K7-Joker that was very helpful. Two notes: All the changes you mentioned are functions and there is one more change I had to make. Below is the complete list of changes I had to make to the simulation.py file to get the simulate function to work properly:

• copula.getDimension() -> copula.dimension()
• copula.getParameter() -> copula.get_parameter()
• copula.inverseGenerator() -> copula.inverse_generator()
• copula.getCovariance() -> copula.R

For reference I'm using Python 3.9.7 and from the package info it looks like PyCopula 0.1.5. It would be nice to add the commonly used pycopula.__version__ functionality for issue tracking.