I have two arrays the first one represents the time axis with time stamp 1 min
time=[0,60,60,120,180,240,300,360,420,480,540]
and the second array represents a data values as follows
data=[18,12,12,0,7,9,6,8,12,18,0]
what im trying to do is two things:
1-I would like to fix the time axis to have 1 second time stamp
2-Perform linear Interpolation as follows:
for example i have
and i would like to have sth like this:
In case of time repetation like the repated 60 seconds the duplication should be deleted
You can remove duplicates (the first value is kept) with
time = [0,60,60,120,180,240,300,360,420,480,540];
data = [18,12,12,0,7,9,6,8,12,18,0];
[time_u unique_indeces] = unique(time);
data_u = data(unique_indeces);
clear unique_indeces;
and interpolate with
time_i = linspace(min(time), max(time), max(time) - min(time) + 1);
data_i = interp1(time_u, data_u, time_i);
I prefer linspace because I usually want to set the number of data points and not the space between points but you can also use min(time):max(time) or time(1):time(end) instead.
This code will also sort your data points by time.