Unable to read image

Dear sir /mam

I have following code :

imgFiles =dir('*.jpg'); numFiles =numel(imgFiles);

for j=1:1:numFiles; if j<=numFiles;

img=imread(imgFiles(j).name); imshow(img); y =rgb2gray(img); imshow(y);

I have error that undefined function or method imftype for input arguments of type char

How to resolve..thanks in advance.

[Michal]

It seems that imftype is called by imread to determine the file format. As a workaround, have you tried explicitly stating the file format since all your images are .jpg:

img=imread(imgFiles(j).name,'jpg');

Similar issue is reported here. Could be a version problem? Sorry, I have no other ideas.