[Scilab-users] Vectorization

[Stéphane Bécu]

Hello,
 
I have much difficulty to optimize my calculation. It consists of calculating the variance of a vector over last N elements . See the example in the attached file for a 3D matrix. With a PC under windows 7 and scilab 5.3, it needs 40 sec to calculate the variance for a 10*10*1000 matrix. This is too much long since I have much bigger files to work on.
 
There must be a way to vectorize the problem but I do not see how ?
 
Thanks in advance,
 
Stéphane
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