开云体育

Hi Tony,
Welcome to the group.? You read all 7000 posts?!? :-)

The NanoVNA is capable of displaying 1:1 SWR graphically so I'm not sure what you are referring to.
You can change the scale on the display to allow you to see finer resolution.
Have you downloaded a copy of the User Guide from the Files section of the forum?
/g/nanovna-users/files/NanoVNA%20User%20Guide-English-reformat-Oct-2-19.pdf
NOTE: I just realised there is no reference in the translated User Guide that describes how to adjust the scale on the display!!? I'll have to add that section.

In any case, select the Display menu and then select Scale.
From there you can set the reference position (defaults to 7, where 0 is at the bottom and 8 is at the top of the display).
Next, adjust the Scale per division.

For SWR, ensure your display Format is set to SWR for CH0 (obviously) and then select a Scale Reference of 0 (bottom division line on the display).?

Then, set your Scale to 0.1 .The bottom of the display will be 1:1 and each division above will increase by 0.1 (ie: 1:1.1, 1:1.2, 1:1.3).
You can also try a Scale of 0.05 for a finer resolution on the display.
I hope this helps (and thanks for the question - I'll have to update the guide now).
...Larry