Averaging the selected vector ranges

Hello! I need to average the values ​​of a vector over 25 values

fr = mean(reshape(VectorTime, 25, [])); % 
Error using reshape
Product of known dimensions, 25, not divisible into total number of elements, 523.

Error in TimeAndWordNN (line 1234)
frr = mean(reshape(VectorTime, 25, []));

When I try to make such a variant, I get an error, please help

for i=1:25:length(VectorTime) && i<length(VectorTime) 
    frr=mean(VectorTime(i:i+1))  % i(1)=1 i(2)=26 
end
% tried what i need to do through the loop but nothing worked

Answer 1

[Mathieu NOE]

hello

my 2 fold suggestion , first is new code according to your expected results , and second is based on sliding averaging - function is in attachement !

enjoy

samples = 1000;
VectorTime = 1 + sin(2*pi*(1:samples)/samples)+ 0.25*rand(1,samples);
buffer = 25;    % nb of samples for averaging 

% zero overlap mean averaging
for ci=1:floor(length(VectorTime)/ buffer)
    start_index = 1+(ci-1)*buffer;
    stop_index = min(start_index+ buffer,length(VectorTime));
    time_index(ci) = round((start_index+stop_index)/2);
    frr(ci) =mean(VectorTime(start_index:stop_index))  % 
end

figure(1),
plot((1:samples),VectorTime,'b',time_index,frr,'or');

% sliding avg method
out = myslidingavg(VectorTime, buffer);
figure(2),
plot((1:samples),VectorTime,'b',(1:samples),out,'r');

[Mathieu NOE]

hello

please use this version of slidingavg (if you are interested in)

I have found a bug in the previous release

all the best