Problem in Using imwrite() Function

for i = 1 : 60000
    name1 = [ 'something' , num2str(i) , '.tif' ] ; 
    pj = importdata(name1) ; 
    
    % do some processing on pj and then save it to new_fig
    
    new_fig = pj ; 
    
    % Write Image Data to a File:
    name2 = ['Output_File_' , num2str(i) , '.tif'] ; %% 
    imwrite(new_fig , name2) ;
 
end

Now the issue is that I want my file names like,

• 'Outfile_File_00001'
• 'Outfile_File_00010'
• 'Outfile_File_00100'
• 'Outfile_File_01000'

you get the idea.

This is required because for subsequent processing. So can anyone suggest me how to go about it. Please remember here, that the overall code is computationally intensive. So I don't want to use any if statments inside the loop. Can we solve this without making use of any if statments.

Thanks :)

[Image Analyst]

So you want the suffix to have all zeros except for a 1 in a certain location? But you have 60 thousand - you can't have a filename 60,000 characters long.

[abhimanyu dubey]

No Sir, You got that wrong. What I want is to have:

• For first 9 images: 'Outfile_File_000001' - 'Outfile_File_000009'
• For 10th to 99th image: 'Outfile_File_000010' - 'Outfile_File_000099'
• for 100 to 999 'Outfile_File_000100' - 'Outfile_File_000999'
• for 1, 000 to 9,999 'Outfile_File_001000' - 'Outfile_File_009999'
• for 10,000 to 99,999 'Outfile_File_010000' - 'Outfile_File_099999'

Apologies, I should have been a bit more precise. But I hope this clearifies things.

Thanks

Answer 1

[Image Analyst]

What I'd do is

name2 = sprintf('Output_File_%6.6d.tif', i);

See the FAQ: https://matlab.fandom.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F

[abhimanyu dubey]

Got it. Thanks a lot Sir. :)