1 | initial version |

One solution is to use `list_plot`

instead of `plot`

. `plot`

takes a function, whereas `list_plot`

accepts a list of (x,y) coordinates to plot. `list_plot`

therefore gives you a bit more control and flexibility. If you replace your last three lines by:

```
Pabrfs= []
for r in srange (-1,1,0.25,include_endpoint=True):
#(pi)x on Alpha off resonance Full H
Pabrfs.append((r,Pabrf(Ratio=r).n(digits=5)))
list_plot (Pabrfs)
```

then it should work. Alternatively you can make this a bit shorter using a list comprehension:

```
#(pi)x on Alpha off resonance Full H
Pabrfs = [(r,Pabrf(Ratio=r).n()) for r in srange(-1,1,0.25,include_endpoint=True)]
list_plot(Pabrfs)
```

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