getting error "Index exceeds matrix dimensions"

Can someone can help me to find out the error

 if true
    % code
i=1;
j=1;
windowsize=50;
[m,n]=size(accX);  
avgX=zeros(m,1);
%*******In each iteration, statistical values of a window are calculated
%and raw data(accX) index is inceremented by windowsize/2 to
%provide %50 overlapping*****%
while(i<=m)
     avgX(j)=mean(accX(i:i+windowsize-1));
     i=i+windowsize/2-1;
     j=j+1;
end

Answer 1

[Star Strider]

Try this instead:

i=i+windowsize;

[Mirbahar Naadiya]

yeah thank u am not getting the error now but all the values of variable avgX is zero. Can u guide me to get mean of the data through sliding window

[Star Strider]

That depends on what ‘accX’ is, and its size. Your code worked for me with a vector I created, and produced the three values I expected when ‘accX’ was a (150x1) vector.