[scilab-Users] moving averager

[Alexander Bluem]

Jörg Kühne wrote:
> Dear user list,
> 
> have someone experience with moving averager. I should calculate the mean value of a certain amount of bins in a vector. It starts from the lowest bin and ends on the highest bin.
> 
> Thanks for your help
> 
> best regards
> 
> joerg

Hello Jörg,

you could simply run through your vector in a loop. Though I am quite 
sure that this "solution" is pretty inefficient, it still works well.

here it is:

//random values
r=floor(rand(1,1000)*1000);

//get size
[nr, nc]=size(r);

//windowsize
wsize=50;

//average vectors
avg=zeros(1:(nc-wsize));
avg2=zeros(1:(nc-wsize));


//iterate through random vector
for i = 1:wsize:(nc-wsize);
   //gliding window
   avg(i:i+wsize)=mean(r(i:i+wsize));
end

   //iterate through random vector
for i = 1:(nc-wsize);
   avg2(i)=mean(r(i:i+wsize));
end

clf;
plot(1:nc, r, 'y', 1:nc-wsize+1, avg, 'b', 1:nc-wsize, avg2, 'g')