Why is MATLAB 7.0.4 (R14SP2) unable to recognize my files, when I use the COPYFILE command in my script?

I run a script, myfile.m, which contains the following code:

FullPathTempDir = tempname; 

[temp_dir temp_file] = fileparts(FullPathTempDir); 

mkdir(FullPathTempDir); 

destinationFile = [temp_file,'.m']; 

origPath = addpath(FullPathTempDir); 

copyfile('hSampleDisp.m',fullfile(FullPathTempDir,destinationFile)); 

type(temp_file);

I receive the following error :

 ??? Error using ==> type

 tp103239 is a directory.

 Error in ==> myfile at 7

 type(temp_file);

Answer 1

[MathWorks Support Team]

This bug has been fixed in Release 14 Service Pack 3 (R14SP3). For previous product releases, read below for any possible workarounds:

This has been verified as a bug in MATLAB 7.0.4(R14SP2) in the way COPYFILE notifies MATLAB about the changes made to a destination directory.

The followings are some workarounds to resolve the issue:

1. Using an absolute path name:

Use an absolute path name as an input to functions(TYPE in this case) accessing the destination directory as follows:

FullPathTempDir = tempname; 

[temp_dir temp_file] = fileparts(FullPathTempDir); 

mkdir(FullPathTempDir); 

destinationFile = [temp_file,'.m']; 

origPath = addpath(FullPathTempDir); 

copyfile('hSampleDisp.m',fullfile(FullPathTempDir,destinationFile)); 

type(fullfile(FullPathTempDir,destinationFile));

2. Use WHICH or EXIST on the path of the destination directory as follows:

FullPathTempDir = tempname; 

[temp_dir temp_file] = fileparts(FullPathTempDir); 

mkdir(FullPathTempDir); 

destinationFile = [temp_file,'.m']; 

origPath = addpath(FullPathTempDir); 

copyfile('hSampleDisp.m',fullfile(FullPathTempDir,destinationFile)); 

which temp_file

type(temp_file);

3. CD to the directory, in which the file is located, before accessing the file.