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iteration on embedded matlab function

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yana osman
yana osman 2012-7-15
hi all, i'm trying to do iteration in embedded matlab function. The coding as below:
function [P5,Q5,B5] = stats(Jacket5,E5,Mw5,Y5)
%#eml
%1st iteration
%---------------------------------------
t1 = NaN(10,1);
u1 = NaN(10,1);
w1 = NaN(3,1);
q1 = NaN(2,1);
p1 = NaN(3,1);
b2_1 = NaN(1,1);
nfactor = 1;
for l=1:nfactor
nn = 10;
t1=Jacket5;
t0=rand(nn,1);
u1=(Mw5);
k=1;
kmax=100;
while (k<kmax)
k=k+1;
t0 = t1;
w1=E5'*u1/(u1'*u1);
w1=w1/norm(w1);
t1=E5*w1;
q1=Y5'*t1/(t1'*t1);
q1=q1/norm(q1);
u1=Y5*q1/(q1'*q1);
end
p1=E5'*t1/(t1'*t1);
%regression
b2_1=u1'*t1/(t1'*t1);
end
%2nd iteration
%----------------------------------------
t2 = ones(10,1);
u2 = ones(10,1);
w2 = ones(3,1);
q2 = ones(2,1);
p2 = ones(3,1);
b2_2 = ones(1,1);
t2=t1;
u2=u1;
t0 = t2;
w2=E5'*u2/(u2'*u2);
w2=w2/norm(w2);
t2=E5*w2;
q2=Y5'*t2/(t2'*t2);
q2=q2/norm(q2);
u2=Y5*q2/(q2'*q2);
p2=E5'*t2/(t2'*t2);
%regression
b2_2=u2'*t2/(t2'*t2);
%3rd iteration
%--------------------------------------------------
t3 = NaN(10,1);
u3 = NaN(10,1);
w3 = NaN(3,1);
q3 = NaN(2,1);
p3 = NaN(3,1);
b2_3 = NaN(1,1);
nfactor = 1;
for l=1:nfactor
t3=t2;
u3=u2;
k=1;
kmax=100;
while (k<kmax)
k=k+1;
t0 = t3;
w3=E5'*u3/(u3'*u3);
w3=w3/norm(w3);
t3=E5*w3;
q3=Y5'*t3/(t3'*t3);
q3=q3/norm(q3);
u3=Y5*q3/(q3'*q3);
end
p3=E5'*t3/(t3'*t3);
%regression
b2_3=u3'*t3/(t3'*t3);
end
%store in matrices
T5 = [t1 t2 t3];
U5 = [u1 u2 u3];
W5 = [w1 w2 w3];
Q5 = [q1 q2 q3];
P5 = [p1 p2 p3];
B5 = [b2_1 b2_2 b2_3];
but the result of second and third iteration are same as the first iteration.Why?anyone have ideas why this happened?
  4 个评论
显示 2更早的评论
yana osman
yana osman 2012-7-16
sir image analysis.your suggestion really work.Thank you.its really work
V Vaishnavi Kumar
V Vaishnavi Kumar 2013-1-13
Sir, i need to iterate an embedded matlab fcn in Simulink model for a particular no. of times. FOR and WHILE (command and iterator) are not appropriate, as the embedded block should get input and output at each iteration.
So i did this by using a digital clock input to the embedded block. thus a simple program is iterating (Simulation time / sample time of digital clock) no. of times properly...
the same logic with a lengthier program is not working, and its iterated unusually many no of times...
how this no of iterations can be controlled any idea

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