Improving the "Put variable dimensions and attributes back tutorial" tutorial

[jypeter]

I've had a quick look at the cdms2 tutorials in the Jupyter-notebooks Tutorials page, and it sometimes seem that tutorials could be simpler, just by using existing cdms2 functions! :-)

The notebook I'm talking about uses

# now put back dimensions on it
fft_s = MV2.array(fft_s)
fft_s.setAxisList(s.getAxisList())

# Dimensions are back
print(fft_s.getAxisIds())

['time', 'latitude', 'longitude']

Put Attributes On It

# now puts the attributes on it
for a in s.attributes:
    setattr(fft_s,a,getattr(s,a))
fft_s.info()

I think that this could be replaced by a single call to the cdms2 functions that exists for this very purpose. As a bonus, I'm showing how users can easily add a new attribute to a variable

fft_s = cdms2.createVariable(fft_s, axes=s.getAxisList(), attributes=s.attributes, id='clt_fft')
fft_s.history = 'Created from clt in ' + f.id
fft_s.info()

You should add a link to the createVariable function documentation. That's another problem. Even knowing the name of the function I was looking for, it took me a lot of time to find the right page! In the end I had to navigate to the appropriate page from the TOC, because the Search result is unfortunately just unusable....

Note: I'm not a big fan of variables that are identified by a single character, especially for tutorials that are supposed to teach good habits to beginners. If somebody updates this tutorial, you can probably replace f with file_in and s with var_in, or something similar