Trange

The set trange command sets the parametric range used to compute x and y values when in parametric mode. If not in parametric mode (see set parametric) then this range is not used. This command does not affect x/y autoscaling or x/y ranges.

This range may also be specified on the plot command line when in parametric mode.

Syntax: 

        set trange [{<tmin> : <tmax>}]

where <tmin> and <tmax> terms are constants or expressions.

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

        set trange [:10]
changes tmax to 10 without affecting tmin. See also set urange and set parametric.