How to use linear interpolation on irregular intervals and reset value

[ 0 0 0 0 1 0 0 2 0 0 3 0 0 0 1 0 2 0 3 0 0 0 0 1 ]

result=>

[ 0 0.25 0.5 0.75 1 1.33 1.67 2 2.33 2.67 3 0.33 0.67 1 1.33 1.67 2 2.5 3 0 0.25 0.5 0.75 1 ]

Is there any helpful function for this?

[Geoff Hayes]

Hyowon - is there any pattern to the above? Does the 1,2,3 repeat with only the number of zeros changing between non-zero integer?

[Hyowon Lee]

Geoff, That's all.

The only differences are the length of data and reset value.

[ 0 0 0 1 0 0 2 0 0 3 0 0 0 4 ..... 720 0 0 1 0 0 2 0 0 0 3 .. ]

Answer 1

[Jan]

data  = [ 0 0 0 0 1 0 0 2 0 0 3 0 0 0 1 0 2 0 3 0 0 0 0 1 ];
match = (data ~= 0);
match([1, end]) = true;

result = interp1(find(match), data(match), find(~match))

[Hyowon Lee]

It didn't work.