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I try to convert a fortran program to matlab. I want to make an absorbing boundary model. But when I run it, I keep getting an error says:

??? Attempted to access w(12); index out of bounds because numel(w)=11.

Error in ==> absorb_bound_coba at 45

w(i)=exp(-1./d.^2.*(x(i)-lim4).^2*w(i));

%input

width=20

n=importdata('node.txt');

x=n(:,2);z=n(:,3);

%define constant

d=0.5*max(x);

w=1;

%computing boundary constant

boundary_width_x=width/100.*(max(x)+abs(min(x)));

boundary_width_z=width/100.*(max(z)+abs(min(z)));

lim1=min(x)+boundary_width_x;

lim2=max(x)-boundary_width_x;

lim3=min(z)+boundary_width_z;

lim4=max(z)-boundary_width_z;

%rectangular model

for i=1:length(x);

if x(i)<=lim1

w(i)=exp(-1./d.^2.*(x(i)-lim1).^2);

elseif x(i)>=lim2

w(i)=exp(-1./d.^2.*(x(i)-lim2).^2);

elseif z(i)<=lim3

w(i)=exp(-1./d.^2.*(x(i)-lim3).^2)*w(i);

elseif x(i)>=lim4

w(i)=exp(-1./d.^2.*(x(i)-lim4).^2)*w(i);

end;

end;

So how I can fix this?

Thanks in advance :D

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# Index out of bound because numel(w)=11

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