Index in position 1 exceeds array bounds (must not exceed 1).

clear all;
clc;
YBUS
IP_DATA
e=busdata(:,3);
f= 0;
V=e+1i*f;
g=abs(ybus);
b=0;
y=g+1i*b;
J1=zeros(1,n);
for i=2:nbus
for k=2:nbus
if i==k
           J1(i,i)=2*e(i)*g(i,i)+g(i,k)*e(k)-b(i,k)*f(k);
else
            J1(i,k)= (e(i)*g(k,i))-(f(i)*b(i,k));
end
end
end
J1;

In J1 (i,k) eroor is coming...Please help asap...

[Jan]

Avoid "asap", because it is impolite to puish voluntary helpers.

Answer 1

[Jan]

We cannot know, what YBUS and IP_DATA is. It is your turn to check, if the error message concerns the variable e, g or f. Do this using the debugger. Type this in the command window:

dbstop if error

Run your code again. When Matlab stops at the error use size() to check the sizes of the potentially concerned variables.

My guess: After

b=0;

the expression b(i,k) does not work for i or k > 1.

[mukul anand]

Thanks after removing b expression it is working.