reading multiple images - strcat

In a folder I have 50 images of 5 subjects 10 each. (all are .jpg format) I named them as

sub1 (1)
sub1 (2)
...
...
sub1 (10)
sub2 (1)
sub2 (2)
...
...
...
...
..
sub5 (10)

I want to read them in matlab.

I have written following code in matlab

for i=1:5
for j=1:10

      name=strcat('sub',int2str(i), ,'(',int2str(j),')','.jpg');
      I=imread(name);
      % some code
      % some code
  end
  end

in the above code problem is with strcat can you please correct the above code. and can you give any alternative way to read all these images from the folder ?

[Jan]

What problem do you exactly have with STRCAT? There are two consecutive commas in the code, which is an error. Do you ant a space there?

[Raviteja]

Yes, I want a null character!

[Jan]

@Raviteja: A space is *not* a null character. Does my answer using SPRINTF solve your problem?

Answer 1

[Jan]

Unfortuanely STRCAT removes marginal spaces from its inputs:

strcat('a', ' ', 'b')
>> ab

This was necessary when string lists have been implemented as CHAR matrices before CELLs have been invented - if I remember correctly this happend in Matlab 4.1.2. Using the CAT command is not influenced by this "smart" unblanking.

For your problem SPRINTF seems to be more convenient and it is not influenced by spaces:

name = sprintf('sub%d (%d).jpg', i, j);

Answer 2

[SHEKHAR YADAV]

for i=1:5 for j=1:10; strcat('d',int2str(i),int2str(j))=a(i,:)-b(j,:)

[SHEKHAR YADAV]

I want correct program this shows an error as dimension mismatch....

[Thorsten]

We cannot run this snipplet as a and b are missing. Further, I think it would be better if you start a new question with an appropriate title instead of posting an answer to a 4 year old question that contains another question...

[elz tomz]

for i=1:50 { A=imread(strcat('your image path\','iMAGE STARTING LETTER',int2str(i),'.bmp')); figure;imshow(A); }

just try it out