give an option for a toggle button on graphs to change y-axis min/max

[dericed]

For instance to toggle between:

• setting y-min and y-max to min and max value of the plot
• setting y-min and y-max to system provided min/max, such a 0,2^(bitdepth) or minval,maxval for the Y graph
• allow user to set custom y-min and y-max

[ElderOrb]

Any preferences on how should it be looking in UI? As I can see there is some space to the left of Y axis:

so a button can be placed here with an icon presenting currently selected mode. Pressing on button could show a popup with 3 radio buttons or something.. What do you think?

Also, should these settings be persistent? If yes - where should be stored? In per user / per app config?

[dericed]

Hmm on the left is not much space. I think the right side is more flexible. Maybe a third icon after the bar-graph-toggle and gear-icon. Then that gives the pop up with radio buttons.
Yes, persistent, and stored per user.