I am trying to define uncertain exchanges using parameters with Brightway25. I've created a very simle example following existing ones that looks like this:
The database with this single activity imports fine with write_database(activate_parameters=True)
The database seems to import ok with write_database(activate_parameters=True) but if I go to the biosphere exchange of co2 and try to use the method random_sample I get all nans. I was hoping that method could "pick up" the uncertainty defined in the activity parameters. I have the same problem with CH4. For the N2O exchange, where I defined the uncertainty directly on the exchange the random_sample method works fine. It seems as only the uncertainty around N2O is being considered. Is this a limitation of the parameterisation or am I doing something wrong ?
