I agree that this is annoying; if not a selectable range (which I think would be best), at least an option to disable auto-scaling.

Also a horizontal grid would help.

serial plotter is an awesone tools
a csv export will be really good.
thanks a lot for the work.
i m also agree with cousteaulecommandant

A quick fix to this is to print your desired scale every time you print a value.

If your values are between 0 and 1000 you can do:

String withScale = "0 ";
withScale += value;
withScale += " 1000";

Serial.println(withScale);

I totally agree. Autorange is no good for me. I am currently sending a value between 0.0 and 1.0 to the serial plotter and it autoranges to -6.0 to +6.0 ... Why?

@andreashove we should not include a lot of overhead in memory and time of execution to our codes because a basic feature is missing.

I am going to agree that this is really difficult to work with and could use a fix.

I agree with @MickMad. Has any progress been made on this issue? I think it would be a useful addition.

yep, 3 years on and still no option....
Plotter is very useful, but on/off autoscale should have been a fundamental feature.
I had to hack together my own plotter as part of a desktop app, but would be easier
in Arduino IDE.

The ability to have a fixed scaling on the Y-axis is direly needed, and should be the default. Workarounds such as this one are possible but add unneeded complexity in a learning situation.