Setting the lower x-axis limit 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 clicking Enter.
The controls 
are used for moving the limit in either left or right direction.