How to calculate th mean/average value for a repetetive time step

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Nadjet Reffai
Nadjet Reffai 2022-5-13
回答： Jon 2022-5-13
I have a daily temperature Data frome 1951 to 2005.
i want to create a loop to calculate the mean value of the temperature each Dt =20 days from 1 Jan 1951 to 31 Dec 2005 and plot it. ( the mean value will be plotted in the middl of Dt).
The main objective is to get a plot like the photo attached.
clear all
close all
clc
% NAME OF THE PROJECT %%
%%%%% PLACE %%%%
% TEMPERATURE MODEL 3.5 HISTORICAL
Temperature = xlsread("File name", "B3:B12786" ); %import temperature data
writematrix(Temperature, 'Temp.txt');
Temp= readmatrix("Temp.txt");
% create the timetable [DD MM YYYY]
year0=1971;
temps=timetable(Temp,'RowTimes',datetime(year0,1,1:height(Temp)));
for i = 1 : length (Temp)
% .... ???
end
My data is then represented like this :
Variable Near-Surface Air Temperature
Datetime Number
Unit Degree Celsius
01-janv-1951 1.0442
02-janv-1951 2.0769
03-janv-1951 9.1496
04-janv-1951 6.8813
.
12-mai-1999 11.3024
13-mai-1999 12.6448
14-mai-1999 13.0754
.
.
Figure source: Climate Impacts Group, based on climate projections used in the IPCC 2013 report.

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回答（1 个）

Jon
Jon 2022-5-13
You should be able to use MATLAB's movmean https://www.mathworks.com/help/matlab/ref/movmean.html for this without any loops

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