drainage and invasion percolation input parameters

[JahanzebTariq]

greetings. I was running the drainage and invasion simulation but got stuck in the parameters putting process, as the pores in my coding are named ans 'xmin' and 'xmax' instead of left and right pores, but when I enter 'xmin' and 'xmax', I get error.

but this does not occur if I use left and right despite of the fact that I have been using 'xmin' and 'xmax' everywhere in the code.

please address this issue
thank you

[jgostick]

You can see what labels are present on the network by doing print(pn). Snow returns xmin, xmax etc, but generators, like Cubic, return left, right, etc. Maybe we would unify these...I will actually create an issue that we should add xmin etc to the generators as well, though keeping left right too.