How I plot data using a specific frequency?

Hi I have measured data every 0.25 second but I would like to plot only data measured every second. EX (00:00:00.00 = 10 00:00:00:25 = 11 ........... .. 00:00:01.00 =13) I want to plot only data at 00:00:00.00 and 00:00:01.00. Any help? thank you

Answer 1

[KSSV]

let t be your time......you skip four values and plot.

Eg:

t = 0:0.25:10 ;
iwant = t(1:4:end) ;

Other way would be, you create your new wanted time and do interpolation for plotting.