Attempted to access G(2305,1,3); index out of bounds because size(G)=[2304,4096,3

can you plese solve this

clear all;
imfinfo('C:\Users\LENOVO\Downloads\IMG_20210623_171757.jpg');
G=imread('C:\Users\LENOVO\Downloads\IMG_20210623_171757.jpg');
figure(1)
imshow(G)
axis on;
f=0,06430379746835442;
l=4096;dx=1;%Lebar(arah sumbu x)
t=2304;dy=1;%Tinggi(arah sumbu y)
z=1;
for x=-l:dx:l;
    j=1;
    for y=-t:dy:t;
        E=G(y+2305,x+4097,3);
        nilai(z,j)=E;
        j=j+1;
    end
    z=z+1;
end

i am getting error command Attempted to access G(2305,1,3); index out of bounds because size(G)=[2304,4096,3

Attempted to access G(2305,1,3); index out of bounds because size(G)=[2304,4096,3].

Error in Untitled2 (line 14)
        E=G(y+2305,x+4097,3);

Answer 1

[KSSV]

You see the error is clear. You are trying to extracting more number of elements than present in the matrix.

Example:

A = rand(5) ;  % A is of size 5x5 
A(1,5)    % no error, element exists 
A(5,5)   % no error, element exists 
A(5,6)   % error as the element is not present

Similiarly G is of size [2304,4096,3]. You are trying to extract G(2305,1,3) which is not present.

You need to check your loop indices.