im uploading two codes which have different outputs. Wats the difference between these two pieces of code. I mean , why there outputs are different . Shudn't outputs be same ?

if true
  % code
block=20*ones(200);
block1=60*ones(500);
block2=100*ones(500);
block3=150*ones(500);
block1(151:350,151:350)=block;
img1=uint8(block1);
subplot(2,3,1)
imshow(img1)  
block2(151:350,151:350)=block;
img2=uint8(block2);
subplot(2,3,2)
imshow(img2) 
block3(151:350,151:350)=block;
img3=uint8(block3); 
subplot(2,3,3) 
imshow(img3)

end

if true
  % code
A=60*ones(500);
B=120*ones(500);
C=200*ones(500);
A(151:350,151:350)=20*ones(200);
subplot(2,3,1)
imshow(uint8(A))
B(151:350,151:350)=20*ones(200)
subplot(2,3,2)
imshow(uint8(A))
C(151:350,151:350)=20*ones(200)
subplot(2,3,3)
imshow(uint8(A))
end

Answer 1

[Guillaume]

Well, in your second piece of code, you're showing A three times. If you show A, B and C you get the same figure as in the first piece:

figure; 
subplot(2,3,1); 
imshow(uint8(A)); 
subplot(2,3,2); 
imshow(uint8(B)); 
subplot(2,3,3); 
imshow(uint8(C));

Answer 2

[sandhya]

Rather your second code should be

if true
  % code
A=60*ones(500);
B=120*ones(500);
C=200*ones(500);
A(151:350,151:350)=20*ones(200);
subplot(2,3,1)
imshow(uint8(A))
B(151:350,151:350)=20*ones(200)
subplot(2,3,2)
imshow(uint8(B))
C(151:350,151:350)=20*ones(200)
subplot(2,3,3)
imshow(uint8(C))
end

[Guillaume]

Please use the formatting tools that this forum offers to you. In particular, the {} Code button.

Your answer is pretty much unreadable.

[Amir]

Thanks to both of u for pointing out the mistake.

[sandhya]

kindly vote for my answer if it really helped you... thankyou

Answer 3

[sandhya]

The two codes will show different results because

In the first code you are subplotting three different images i.e block1,block2,block3

but in the second code your code subplots the same image i.e A three times...this is why you are getting wrong outputs....