how to save the result of each iteration of 'for' loop in a text file without replacing the previous results in the text file????

ow t

[KALYANAPU SRINIVAS]

Here is the sample code

for ii = 1:Ne

enc_x(ii+1) = r*enc_x(ii)*(1 - enc_x(ii));

enc_y(ii+1) = r*enc_y(ii)*(1 - enc_y(ii));

fid=fopen('my1.bin','w');

if(enc_x(ii)>enc_y(ii))

iwant(ii)=0;

else

iwant(ii)=1;

end

fprintf(fid,'%d \n',iwant);

fclose(fid);

[madhan ravi]

Attach the sample data and your desired file output as a short example of what you mean

Answer 1

[Arvind Sathyanarayanan]

Have you tried the fprintf command?

[KALYANAPU SRINIVAS]

yes but the last value is shown. Here is the sample code

for ii = 1:Ne

enc_x(ii+1) = r*enc_x(ii)*(1 - enc_x(ii));

enc_y(ii+1) = r*enc_y(ii)*(1 - enc_y(ii));

fid=fopen('my1.bin','w');

if(enc_x(ii)>enc_y(ii))

iwant(ii)=0;

else

iwant(ii)=1;

end

fprintf(fid,'%d \n',iwant);

fclose(fid);

Answer 2

[KALYANAPU SRINIVAS]

its not my1.bin ...it is my1.txt file

Answer 3

[Arvind Sathyanarayanan]

Please see my code below. I open file before my for loop and close it after the end of the for loop.

fid = fopen('Test.txt','w');
for i = 1:100
    if mod(i,2)
        fprintf(fid,'%d\r',i);
    end
end
fclose(fid);

[KALYANAPU SRINIVAS]

Thank you for the answer.

When I open the test.txt file it is displaying the loop outputs in appended form. I want to save each iteration output in text.txt file one after the another like

1

3

5

7

.......

I tried with 'wt' mode in fopen but not succeded. I tried using \n also but no use. help me in this regard

[Arvind Sathyanarayanan]

The end of line character in notepad is '\r\n'. If you change my code as below, you should be able to save each iteration in a new line

fid = fopen('Test.txt','w');
for i = 1:100
    if mod(i,2)
        fprintf(fid,'%d\r\n',i);
    end
end
fclose(fid);

[KALYANAPU SRINIVAS]

fid=fopen('test.txt','w');
x(1)=0.012;
   for ii = 1:10
    x(ii+1) = r*x(ii)*(1 - x(ii)); 
    y(ii+1) = r*y(ii)*(1 - y(ii)); 
        if (x(ii)>y(ii))
               i_decrypt(ii)=0;
         else 
               i_decrypt(ii)=1;
         end
 fprintf(fid,'%d\r\n',i_decrypt);
   end
 fclose(fid);

[KALYANAPU SRINIVAS]

Please make sure that all the outputs of this code store in the text file one after the other. I tried in all the ways u provided but no use

[Arvind Sathyanarayanan]

Can you attach your entire code and the text file?

Also, did my code work for you?

[KALYANAPU SRINIVAS]

fid=fopen('test.txt','w');

x(1)=0.012;

for ii = 1:10

x(ii+1) = r*x(ii)*(1 - x(ii));

y(ii+1) = r*y(ii)*(1 - y(ii));

if (x(ii)>y(ii))

i_decrypt(ii)=0;

else

i_decrypt(ii)=1;

end

fprintf(fid,'%d\r\n',i_decrypt);

end

fclose(fid);

[KALYANAPU SRINIVAS]

test.txt file should contain the outputs of the each iteration as shown i.e

for iteration one:::::12345

for iteration two::::23456

for iteration three:::::34567

for iteration four:::::23344

for iteration five:::::66777

but when above program is executed the test file contains the outputs as shown

1234523456345672334466777...................

Answer 4

[Elijah Smith]

you must open the file with "append" permissions not "write" permissions like so:

fid = fopen(my1.txt, 'a'); %this will not erase what is currently in the file

[Elijah Smith]

you opened it like so:

fid = fopen(my1.txt, 'w');

this will write over what is currently in the file.

[KALYANAPU SRINIVAS]

it is not working