MATLAB: How to input values in a 2D matrix using a nested for loop of size 5*5

matrix

how to input values in a 2-D matrix using a nested for loop of size 5*5?

Best Answer

for i = 1:5
  for j = 1:5
    A(i,j) = input(sprintf('please enter value (%d, %d) >> ', i, j))
  end
end

Related Solutions

MATLAB: I want to use 55 filter mask on the image in order to detect edges but the image is 33 how can i make the image 5*5? Please help me

Why are you extracting a 3x3 subset of your image in the first place if you have a 5x5 filter?

I would assume you need

Gx=sum(sum(F1.*A(i-2:i+2,j-2:j+2)));
Gy=sum(sum(F2.*A(i-2:i+2,j-2:j+2)));

and your loops will have to run from 3 up to size-2 instead unless you want to do special handling for the edge pixels where you don't have a full neighbourhood.

you should be able to use

doc nlfilter

or similar functions for this though too, although last time I used it it did annoyingly force a progress bar on you.

MATLAB: Get all the values from a two (for loop)

clear all; 
clc; 
d=1:5;
g=1:5;
m = 5 ; n = 5 ; 
x = zeros(m,n) ; % initilization 
for i=1:5     
    for j=1:length(g)
        x(i,j)=d(i)*2;
    end
end

The above can be obtained without loop.

x = repmat(d'*2,1,5)

Best Answer

Related Solutions

MATLAB: I want to use 5*5 filter mask on the image in order to detect edges but the image is 3*3 how can i make the image 5*5? Please help me

MATLAB: Get all the values from a two (for loop)

Related Question

MATLAB: I want to use 55 filter mask on the image in order to detect edges but the image is 33 how can i make the image 5*5? Please help me