MATLAB Answers

huda nawaf

how save diplayed data?

Asked by huda nawaf
on 6 Apr 2012

hi,

i have the following code:

fid=fopen('webscopG.txt');
for j=1:100000
   tline = fgetl(fid);
   i=i+1;
   if ~ischar(tline), break, end
   disp(tline);
end
fclose(fid);

this code will display tline as array, and that what I need . But how I can save this array of tline.

thanks

  2 Comments

Image Analyst
on 6 Apr 2012

Save it how? In a different text file? In a .mat file?

huda nawaf
on 12 Apr 2012

text file

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3 Answers

Answer by Walter Roberson
on 6 Apr 2012
 Accepted answer

If you are unable to modify that source, then consider the diary command, or consider executing that source within evalc() and writing out the characters you get back from evalc().

Much better would be to follow IA's suggestion of writing to a file within the loop itself. fopen(), fprintf(), eventually fclose()

  6 Comments

Walter Roberson
on 12 Apr 2012

Huda, notice that tline is fprintf()'d within the loop, not after the loop.

If you want a variable to contain all of the lines after the loop, store tline into a cell array.

huda nawaf
on 13 Apr 2012

many thanks walter,
Now I want to save tlines from sepecific position,i.e I do not print it from first line. what i have to do?

thanks

Walter Roberson
on 13 Apr 2012

if (i >= RangeStart) && (i <= RangeEnd); fprintf(....); end


Answer by Thijs
on 6 Apr 2012
fid=fopen('webscopG.txt'); 
for j=1:100000 
tline{i} = fgetl(fid); 
i=i+1; 
if ~ischar(tline), 
break, 
end 
disp(tline); 
end fclose(fid);

does that work?

  1 Comment

Walter Roberson
on 6 Apr 2012

No, you cannot have "fclose" in the same statement as "end".


Answer by Image Analyst
on 6 Apr 2012

Maybe open a second file for writing and write it out with fprintf()?

  1 Comment

huda nawaf
on 12 Apr 2012

I can not do that, because the tline save just last line


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