matlab changing time scale on a waveform
i have a waveform which i have read in using matlab.
fs = 200, waveform length = 20s.
if i read in waveform and plot() it, without setting 't', matlab will auto generate a scale from 0 to 4000
using plot(waveform(1800:2200)) will show me 2 cycles.
and i can plot the full waveform with correct time scale by t=(0:length(ecgclean)-1)/fs;
but how can plot waveform only over 2 cycles using the correct time scale?
arghh, i know it will be trival but i just cant get it work!
thanks for any help