How to get data every second from table that has variable sampling time

hello, i have problem to extract data from a table. My data table :

time = [ 0 0.0010 0.0021 0.0031 0.0041 0.0053 and so on........ ]

torque = [ 0 1.22 1.32 1.32 1.42 1.60 and so on..........]

my problem is, how to extract data every 0.001 second while my data table have sampling time between 0.001 and 0.002.

If I have fixed sampling time, then i can extract data at interval and that would be easy.

I have 162000 data so i can't sort every single cell to get data at exactly 0.001 second interval.

Any help would be appreciate thank you.....

Answer 1

[Walter Roberson]

Create a timetable() object and use retime()

[Andrei Bobrov]

time = [ 0 0.0010 0.0021 0.0031 0.0041 0.0053];
torque = [ 0 1.22 1.32 1.32 1.42 1.60];
TT = timetable(seconds(time(:)),torque(:));
TT_out = retime(TT,seconds(0:.001:.005)','linear');

[Walter Roberson]

TT_out = retime(TT, 'Regular', 'TimeStep', 0.001);

[Andrei Bobrov]

Yes Walter! But I use R2016b. :)

[pratama mahadika]

Thank you guys it works with no problem

Answer 2

[KSSV]

Read about interp1.

time = [ 0 0.0010 0.0021 0.0031 0.0041 0.0053 ] ; 
torque = [ 0 1.22 1.32 1.32 1.42 1.60] ; 

dt = 0.001 ; 
ti = min(time):dt:max(time) ; 
iwant = interp1(time,torque,ti)

[pratama mahadika]

this method also works......

thank you :)