How to resample long gaps in Matlab

Hi everyone. I have a dataset with time (every 10 minutes) and temperature. I want to fill the gaps and i althoug I have tried to use the method Spline doesn't work when I have a long gap for 5 days - 30 days the temperature take negative values when the real values temperature are positives. I am new to resampling and and I am getting a little lost when I try to use that method. I have a long gap the day 11/03/2019 .

Answer 1

[KSSV]

Read about fillmissing

https://in.mathworks.com/help/matlab/ref/fillmissing.html