Displaying in command winodw but i need to store in .txt file

Hello

In a code I have a random 20000 data sequence ranging form 0 to 255, I am displaying the locations of each data they occurred in a matlab code in command window such that

        for  i=0:1:255
         i

    locations=find(X==i)% finding the locations of same number in the randomly genarated vector
% X is my random generated sequence of 20000 data

I am getting output in command window such that

i =

   134

locations =

Columns 1 through 10

         402         802         846        1476        2101        2293        2322        2594        3408        3444

that is 134 occurs in such positions of random sequence

but due to huge no of data the complete list is not available on command window i am getting data from i=125 the rest of data are hiding some where in command window,,how can I put this i and locations in a separate notepad file.. regards

Answer 1

[Sean de Wolski]

You could use diary:

doc diary

Or fopen/fprintf/fclose

[joy]

yes I tried but I am not getting the exact output what I am getting in command window..am I doing any mistake? let me know

fName = 'D:\locations.txt';
fid = fopen(fName,'w');
for  i=0:1:255
   i;
   fprintf(fid,'%d\r\n',i);
locations=find(X==i);% finding the locations of same number in the randomly genarated vector
    fprintf(fid,'%d\r\n',locations);

end

      fclose(fid);

where the error lies?what change I have to do to get the command window like output

[Jonathan Epperl]

Use the diary suggestion, it doesn't get any easier than that!

diary mydiaryfile.txt
%%Your Code %%
diary off

and now you have a file mydiaryfile.txt in your current working directory with all the output in it.

[joy]

yes Sean de Wolsk & Jonathan Epperl

Diary really works for me, thanx

Answer 2

[Kye Taylor]

The following code is not ideal in that two for loops are being used where one would suffice. However, it makes it clear which code is creating data, and which code is writing to a file.

X = randi(256,1,1000) - 1;% proxy for your X
v = 0:1:255; % vector of values
locations = cell(1,length(v)); % space for each vector of indices

for  i = 1:length(v)
   locations{i}=find(X == v(i));
end

[fid,msg] = fopen('newTextFile.txt','w');
fprintf(fid,'%s\t%s\n','idx','loc');
for i = 1:length(v)
    array = [i,locations{i}];
    fprintf(fid,[repmat('%d\t',1,length(array)),'\n'],array);
end

fclose(fid);