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# Attempted to access lambda(160); index out of bounds because numel(lambda)=1.

Asked by KK on 12 May 2013

Hi,

I am using Matlab2008 and I have this problem : "Attempted to access lambda(160); index out of bounds because numel(lambda)=1."

This is my program code:

```clear all
n=1000;
a=input('a: ');
b=input('b: ');
Y(1)=input('Y(1)= ');
C(1)=a+b*Y(1);
G=input('G: ');
I=input('I: ');
E(1)=C(1)+I+G;
lambda=input('lambda: ');
delY(2)=lambda(E(1)-Y(1));
%Ys=(a+I+G)/(1-b);
for t=2:n
C(t)=a+b*Y(t);
delY(t+1)=lambda(E(t)-Y(t));
Y(t+1)=lambda(a+I+G)+[1-(lambda(1-b))]*Y(t);
end;
time=1:1:n;
figure
plot(time,Y)
xlabel('t')
ylabel('Y(t)')
```

Does anyone know what this problem relates to?

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Answer by Walter Roberson on 14 May 2013

What response is the user expected to give to

```lambda=input('lambda: ');
```

??

Do you understand that lambda(E(1)-Y(1)) means to access the array named "lambda" at the index which has been calculated as E(1) minus Y(1) ?