known the marginal distribution how can I got the joint distributions by pycopulas without fit the marginal distribution

[0wenwu]

Environment details

If you are already running Copulas, please indicate the following details about the environment in
which you are running it:

• Copulas version: the latest version
• Python version: 3.7.0
• Operating System: win10

Problem description

I am a researcher on hydrology. In the field of hydrology, the marginal distribution is known as Pearson-III. So my question is how can I got the joint distributions by ‘copulas’ with the known marginal distribution.

[tellja]

I was wondering if there is a way to determine the joint distribution from known marginal distributions?

Thank you for your great work!