Setting the lower x-axis limit

The controls shown above are used to set the lower x-axis limit.

If auto-scale lower x-limit  is toggled, the minimum x-value of any of the curves in the plot will be used as minimum value. The edit window  shows the current value, 10 Hz in this example. It is possible to type a new value, but remember to validate it by pressing Enter.

The controls  are used for moving the lower limit in either left or right direction.