Average of every n values in a matrix.
6 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Austin Ukpebor
am 11 Feb. 2021
Kommentiert: Austin Ukpebor
am 11 Feb. 2021
I have mx6 matrix. I want to take average of every 10 values for each column ( avg of 1-10, 11-20, .....). I tried the code below for nx1 vector and it worked. I need a help for that of 6 columns. Thank you.
A = readmatrix('cleanedData.csv');
n = 10;
s = numel(A);
out = nanmean(reshape( [A(:);nan(mod(-s,n),1)],n,[]));
avg_data = transpose(out);
0 Kommentare
Akzeptierte Antwort
Mathieu NOE
am 11 Feb. 2021
hello
see 2 examples below , without and with overlapping sections
% dummy data
data = rand(320,15);
buffer = 5; % nb of samples for averaging
% zero overlap mean averaging
[m,n] = size(data)
for ci=1:fix(length(data)/ buffer)
start_index = 1+(ci-1)*buffer;
stop_index = min(start_index+ buffer,length(data));
time_index(ci) = round((start_index+stop_index)/2); % time index expressed as sample unit (dt = 1 in this simulation)
avg_data(ci,:) =mean(data(start_index:stop_index,:)); %
end
figure(1),
plot(time_index,avg_data);
% averaging with overlap
shift = 5; % nb of samples for averaging
buffer = 50; % nb of samples for averaging
overlap = buffer-shift
for ci=1:fix((length(data)-buffer)/shift +1)
start_index = 1+(ci-1)*shift;
stop_index = min(start_index+ buffer,length(data));
out_data{ci} =data(start_index:stop_index,:); %
figure(ci),
plot(out_data{ci});
end
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Logical finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!