How to plot x,y,z data for various time ranges

I am a newbie. I have accelerometer (x,y and z axis)data that was collected during flight. There are over 1 million points. The timeframe for ex. 12:00:00.000 to xx:xx:xx.xxx. Sample rate is 800. I can plot all of the data, however, I'd like to be able to pick certain time periods to plot. The eventual goal is to use FFT for Frequency Response for (vibration analysis). How can I set various time periods to plot from using the data collected during that period? Forgive me if this is too simple.

Answer 1

[Lamar]

I found the solution...

https://www.mathworks.com/matlabcentral/answers/18660-how-do-i-plot-a-selective-range-of-x-axis-values