update 3_Multichannel

[casperdcl]

• update demos/3_Multichannel (part of #155)
  • [x] drop max_iteration
  • [x] fix check_convergence
  • [x] tidy k = 0; k+=1 -> enumerate
  • [x] str.format -> f-strings
  • [x] print -> tqdm
  • [x] show2D: append ; if last cell line

[MargaretDuff]

We aren't always seeing progress bars e.g.folder 3 notebook 1:

[MargaretDuff]

Can we zoom this in on folder 3 notebook 3:

[MargaretDuff]

In folder 2 notebook 2, is this a regularisation toolkit issue?

[lauramurgatroyd]

Sorry if I've missed this but why do we need ';' after show2D if its the last cell line?

[lauramurgatroyd]

Can we zoom this in on folder 3 notebook 3:

This was the biggest I could get it, but it removes the tilt which possibly makes it less useful.

I think there are some issues with show_geometry which make it difficult to zoom in - I will investigate further and open an issue in CIL

[lauramurgatroyd]

I am going to revert the show_geometry change

[lauramurgatroyd]

Relevant issue in CIL: https://github.com/TomographicImaging/CIL/issues/1954

[MargaretDuff]

Needs an additional: as_array()

[MargaretDuff]

Tested on 24.2.0 - happy to merge!