I am having this error. Could you help?

Error using fopen Unable to find file. Ensure file exists and path is valid.

Error in dlmread (line 120)

[fid, theMessage] = fopen(filename);

Error in Self_Mob_TTB_Code_7_9_19 (line 81)

TTB=dlmread([data_

[Jan]

Please post the complete line of code, which causes the error.

[Anuradha Gonjari]

baseFileName = 'C:\Users\Admin\Desktop\Pritee\apg\download.jpg';

fullFileName = fullfile(pwd,baseFileName);

grayImage = imread(fullFileName);

[Jan]

baseFileName does contain a complete path already. Then appending it to the current folder creates a file path, which does not exist.

FileName = 'C:\Users\Admin\Desktop\Pritee\apg\download.jpg';
% fullFileName = fullfile(pwd,baseFileName);  % Nope
grayImage = imread(FileName);

Answer 1

[Jan]

The error message is clear: You provide a name, which is not an existing file. What is exactly hidden in the omitted rest of:

TTB=dlmread([data_   ... ?

[Billy Grizz]

I can's seem to find out what the name of the name is and what is missing. My key file matches the data files I am looking for and the paths seem to be correct. Any suggestions on how to get to the bottom of this?

[Billy Grizz]

Is there a way to have it give me the name it can not find so I can trouble shoot more?

[Jan]

@Billy: Use the debugger to examine problems. Type this in the command window:

dbstop if error

Then run the code again. When Matlab stops at the error, check the name of the file.

Actually I'd assume, that you can find the contents by reading the code, most of all this line:

TTB=dlmread([data_   ...

If you show us at least the complete line, a more precise suggestion might be possible.

Answer 2

[Star Strider]

It is likely better to use the fullfile function than to cd to the path.

I would define ‘keyfile’ as:

keyfile = fullfile(pathname, filename);

and completely remove the cd calls.

EDIT —

If you hare having problems finding the file, You will have to use the operating system to find it if it is not on your MATLAB search path. In Windows, this is the File Explorer utility.