unable to open a file from a folder........help

yourFolder ='C:\Users\Parag\Desktop\open\files';

dirListing = dir([yourFolder '/*.txt*']);

baseFileName = dirListing(1).name;

data=importdata(baseFileName)

set(handles.display2,'string',data);

files are:

0000.txt

0010.txt

0020.txt

0030.txt ...................................

[KSSV]

Can you tell me what is length(dirListing)?

Have you tried to check is baseFilename a text file?

[SANKAR JYOTI NATH]

 about 60 file in the folder

[KSSV]

Then is length(dirListing) is 60? How are txt files? What data it has?

[SANKAR JYOTI NATH]

it has some numeric data like this

 2.32611e+006       66       7.21110

 2.32611e+006       75       7.81025

 2.32611e+006       99       7.00000

 2.32611e+006      108       7.28011

 2.32611e+006      117       7.21110

 2.32611e+006      126       7.07107

 2.32611e+006      159       7.28011

 2.32611e+006      168       8.06226

 2.32611e+006      177       7.81025

 2.32611e+006      210       7.28011

 2.32611e+006      219       7.21110

 2.32611e+006      228       7.07107

 2.32611e+006      261       7.28011

 2.32611e+006      270       8.06226

 2.32611e+006      279       7.07107

 2.32611e+006      312       7.07107

 2.32611e+006      321       8.06226

 2.32611e+006      330       7.07107

 2.32611e+006      363       7.07107

[SANKAR JYOTI NATH]

and from that data i have to do some calculation

[KSSV]

If dirListing has got the files information, then your code shall work.

[SANKAR JYOTI NATH]

how can i provide the file information to dirlisting?

[KSSV]

what is length(dirlisting)? dirlisting(1).name shows text file 0000.txt ?

[SANKAR JYOTI NATH]

length is 60, and yes dirlisting(1).name shows text file 0000.txt

[KSSV]

Then it should work, once you import data must have the file data in it.