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how to get answer from tic tok command that stays on the screen

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lilly lord
lilly lord on 12 Apr 2020
Commented: lilly lord on 17 Apr 2020
Hi, I m using tic toc commamand , but answer appears in commad window for nano sec, i think and then disappears. i have attached the code. can some one tell me where is the mistake?I cannot record the values.
function .....
.....
tic
for i=0:total_Blocks-1
Plain_Text=linear_Image((i*16)+1:(i*16)+16);
Cipher_Text = cipher (Plain_Text, w, s_box, poly_mat, 1);
re_plainText = inv_cipher (Cipher_Text, w, inv_s_box, inv_poly_mat, 1);
enImage((i*16)+1:(i*16)+16)=Cipher_Text;
deImage((i*16)+1:(i*16)+16)=re_plainText;%Retrieved Plain Text
toc
end
figure,
imshow(uint8(enImage));
end

Accepted Answer

per isakson
per isakson on 12 Apr 2020
Edited: per isakson on 12 Apr 2020
Replace
toc
by
elapsed_time = toc;
which saves the elapsed time iin the variable, elapsed_time. And add
elapsed_time
after imshow()
In response to comment
The first mistake is that tic is outside the for-loop and toc inside. I missed that because toc wasn't intended. That raises the question which elapsed time do you want to measure.
Try something like this
function elapsed_time = xyz( )
% code
elapsed_time = nan( total_Blocks, 1 );
for ii=0:total_Blocks-1
tic
Plain_Text=linear_Image((ii*16)+1:(ii*16)+16);
Cipher_Text = cipher (Plain_Text, w, s_box, poly_mat, 1);
re_plainText = inv_cipher(Cipher_Text, w, inv_s_box, inv_poly_mat, 1);
enImage((ii*16)+1:(ii*16)+16)=Cipher_Text;
deImage((ii*16)+1:(ii*16)+16)=re_plainText;%Retrieved Plain Text
elapsed_time(ii+1) = toc;
end
figure,
imshow(uint8(enImage));
end
  6 Comments
lilly lord
lilly lord on 17 Apr 2020
sorry i m new in coding , later i work on ur ur comment /answer
"The first mistake is that tic is outside the for-loop and toc inside. I missed that because toc wasn't intended. That raises the question which elapsed time do you want to measure.'
and i have solved the problem. thank you so much for ur help.

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