How to solve this error?

function COM = jcoMatrix(I1) %Declare the function

% coMatrix : co-occurrence matrix

d_i = 0;

d_j = 1;

COM = zeros(256, 256); % Declare the size of the CCM

for i = 1:(size(I1, 1) - d_i)

for j = 1:(size(I1, 2) - d_j)

index_i = I1(i, j) + 1;

index_j = I1(i + d_i, j + d_j) + 1;

COM(index_i, index_j) = COM(index_i, index_j) + 1;

% To calculate the repeatition of pixel value so to generate CCM

end

end

Attempted to access COM(1.01408,2); index must be a positive integer or logical. Error in jcoMatrix (line 13)

COM(index_i, index_j) = COM(index_i, index_j) + 1;

Answer 1

[KALYAN ACHARJYA]

Save the function file in different MATLAB script and ensure that filename must be same as function name, that is jcoMatrix.m

function COM = jcoMatrix(I1)      %Declare the function 
% coMatrix : co-occurrence matrix 
    d_i = 0; 
    d_j = 1; 
COM = zeros(256, 256); % Declare the size of the CCM
for i = 1:(size(I1, 1) - d_i)  
    for j = 1:(size(I1, 2) - d_j) 
            index_i = I1(i, j) + 1; 
            index_j = I1(i + d_i, j + d_j) + 1; 
            COM(index_i, index_j) = COM(index_i, index_j) + 1;
        % To calculate the repeatition of pixel value so to generate CCM 
    end 
end 

Next call the function from command window or another main MATLAB script by passing input argument I1 (matrix here)

[Bajdar Nour]

thanks dear it works