Plot a signal in an interval of time

how do i plot this signal in specific interval from -2 to 2

Xnsum= transXn (:) ;

Answer 1

[KALYAN ACHARJYA]

If you already have the sata ranges transXn, then you can extract only those data points having >-2 and <2

Xnsum=transXn(transXn>=-2 & transXn<=2);
plot(Xnsum);

If NOT, defined signal in the range and plot

signal=-2:01:2;
plot(signal)