CODEWITHSUNDEEP
scilabimread
khushbu
khushbu

Reputation: 47

Reading multiple images which are in a folder in Scilab

I want to read multiple images which are in a folder in Scilab. My code is:

I1=dir('G:\SCI\FRAME\*.jpg');
n=length(I1);
disp(n);
for i=1:n
    I2=strcat('G:\SCI\FRAME\',I1(i).name);
    I=imread(I2);
    figure(),imshow(I);
end

But it does not work. It shows error "invalid index".

Upvotes: 1

Views: 608

Answers (1)

Attila
Attila

Reputation: 615

There are two mistakes to correct:

1.) length gives the number of characters (=length) of a string, but you want to get the number of elements (=size) in a vector (the filenames), hence you should use size.

2.) I1 is a list structure returned by dir. You can extract its content with the . operator, e.g. I1.name, I1.date, I1.bytes, I1.isdir. Type these into the consol, to see the contents! Since I1.name already contains the fullpath+filename+extension as a string vector, you don't have to construct it with strcat. Anyway if you want to "glue" 2 strings together, it's easier to use + e.g. S="fisrst_string"+"second_string". So the revised code:

I1=dir('G:\SCI\FRAME\*.jpg');
n=size(I1.name,"*");  //size of the I1.name vector
disp(n);
for i=1:n
  I=imread(I1.name(i));  //I1.name is a string vector
  figure();
  imshow(I);
end

Upvotes: 1

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