how to find the length of a directory

I have a folder in which my images are saved.I want to find the no. of .tif files stored in the directory. I wrote j=length(dir(['E:\IMAGES\*.tif'])); It shows an error Index exceeds matrix dimensions Please can anyone explain this?

Folder Name : E:\IMAGES File name image_####.tif where #### is any four digit number

THANKS IN ADVANCE

Answer 1

[Jos (10584)]

The error is most likely to the fact there is variable called dir (or, less likely, length) in your workspace. Try this

which dir
which length

To reproduce the error:

clear dir
dir('*.*')
dir = 1:4 ;
dir('*.*')

which gives the error " ??? Index exceeds matrix dimensions. ". The reason is that the last line is looking for the 42nd element of the vector dir, which has only four elements. (the ascii code of '*' is 42).