strcat help

filename=strcat('frame',num2str(i),'.jpg')

This line is within a for loop so images are created with filenames...

frame1, frame2...frame50

How can I change this line of code so that it is... frame001, frame002 ... frame050

Answer 1

[Jan]

filename = sprintf('frame%03d.jpg', i)

Answer 2

[Walter Roberson]

http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F

Answer 3

[Micky Elias]

filename=strcat(num2str(img,'%04i'),'.jpg');

[Walter Roberson]

%03i not %04i for the user question.