Yrange

The set yrange command sets the vertical range which will be displayed. This command turns Y axis autoscaling OFF.

This range may also be specified on the plot command line.

Syntax:

        set yrange [{<ymin> : <ymax>}]

Where <ymin> and <ymax> terms are expressions or constants.

Both the <ymin> and <ymax> terms are optional. Anything omitted will not be changed, so

        set yrange [:10]
changes ymax to 10 without affecting ymin.