How do I interpolate a set of data?

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Tobenna Uzuegbunam 2020-5-27

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https://ww2.mathworks.cn/matlabcentral/answers/535248-how-do-i-interpolate-a-set-of-data

回答： Sai Sri Pathuri 2020-5-29

LowesoftTidal_10_2019.csv

Hi,

I'm trying to interpolate a set of data, however, I keep getting the error message " Error using timetable/retime (line 140)

Input timetables must contain sorted (increasing or decreasing) row times when synchronizing using 'linear' ". Can anyone help me out? The data is a 15 minute data that I need retimed to 1 second. The code used seen below and the data is attached.

%import data
Lowesoftsst_10_2019 = importlowesoftssh('LowesoftTidal_10_2019.csv');
%change table to timetable
sshtimetable = table2timetable(Lowesoftsst_10_2019);
% Retime timetable
sshretimed = retime(sshtimetable,'regular','linear','TimeStep',seconds(1))

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Answer 1

Sai Sri Pathuri 2020-5-29

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/535248-how-do-i-interpolate-a-set-of-data#answer_442427

I assume importlowesoftssh is user-defined function. So, I cannot run the code at my end. However, from error, I think you need to sort the time column of sshtimetable file either in ascending/descending order to resolve the issue.