Plot attributes

[FranzForstmayr]

This PR tries to get rid of the code in

scikit-rf/skrf/plotting.py

Line 900 in 26243ff

# TODO: remove this as it takes up ~70% cpu time of this init

which generates the plotting methods for Networks and adds them to the network object.

Due to less code parsing the initialization time should be reduced, as the method itself is now parsed only once (plot_attrribute), for the individual plotting methods like plot_s_re,plot_s_db and so on, the method is called with different parameters.

For all the autogenerated methods a new docstring is created. There's no way to check the correctness of the plot, however we can see if a exception gets thrown.

[FranzForstmayr]

NetworkSet still has some strange dynamic plotting methods, but plotting.py is much cleaner now.

[FranzForstmayr]

We should really ask our self, if we need that much methods on a class like NetworkSet.
Before the autogeneration of attributes in NetworkSet's constructor the __dir__() object has 81 entries. This is not less, but ok.
After the generation we have 952!! entries, most of them autogenerated plot methods, in __dir__().

This PR should not make any functional difference to any user, but we really need to tighten the API in the future.

[jhillairet]

NetworkSet still has some strange dynamic plotting methods, but plotting.py is much cleaner now.

There are the same changes in the PR #852, could say essentially what/where are the difference? I'm a bit lost...

We should really ask our self, if we need that much methods on a class like NetworkSet.

This is probably too much you're right, but it's hard to say what users are really using or not....

[jhillairet]

what about this one for the next release ?

[FranzForstmayr]

There are some docstring which need some more work. I think we should wait for the next one.
Furthermore I wanted to create unittest for the plot functions, they should not raise something unexpected

[jhillairet]

@FranzForstmayr could you look to the conflicts and make a brief summary of the purpose of the the changes ?

[FranzForstmayr]

I'm ready to merge if ok