MATLAB: Am I unable to open a file that contains two periods in its name using the FOPEN function in MATLAB 7.0 (R14)

dotextensionsfopenMATLABperiodr14

I have a file named "a.b.txt" in my $MATLAB\work directory (where $MATLAB is the MATLAB root directory on my machine), as returned by typing

matlabroot

at the MATLAB command prompt.)

 When I am in this directory, the following command:
fopen('a.b.txt')

works correctly. However, when I am in a different directory, the file is not found, and the command:

cd ..
fopen('a.b.txt')

does not open the file. The same steps open the file correctly in MATLAB 6.5.1 (R13SP1).

Best Answer

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

We have verified that there is a bug in the way that the FOPEN function in MATLAB 7.0 (R14) handles file names with more than one period.

As a workaround, specify the entire path to the file. For example, use:

fopen([matlabroot, '\work\a.b.txt'])

Related Solutions

MATLAB: Am I unable to select a file when I use the UIGETFILE function and filter on “.” in MATLAB 7.0.4 (R14SP2) on MacOS

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

This bug has been fixed in MATLAB 7.1 (R14SP3). For previous versions of MATLAB please see below for any possible workarounds.

There is a bug in MATLAB 7.0.4 (R14SP2) in the way that the UIGETFILE function grays out all files when it uses the "*.*" filter on Mac.

To work around this issue, use a different filter than "*.*".

MATLAB: How to delete a particular row in multiple TXT files

Please take a look at the example code below which deletes the 3rd row of TXT files present in the current directory. The code reads in the TXT files in the current directory, deletes the 3rd row and saves the modified files to a new folder

files = dir('*.txt') ; %read all txt files in current directory
N = length(files) ;
mkdir newFiles % create new folder
for i = 1:N
  filename = files(i).name ;
  A=importdata(filename);
  A(3)=[];  %delete 3rd row
  fid = fopen(['newFiles/' filename],'wt');
  fprintf(fid,'%s\n', A{:});
  fclose(fid);
end

Best Answer

Related Solutions

MATLAB: Am I unable to select a file when I use the UIGETFILE function and filter on “*.*” in MATLAB 7.0.4 (R14SP2) on MacOS

MATLAB: How to delete a particular row in multiple TXT files

Related Question

MATLAB: Am I unable to select a file when I use the UIGETFILE function and filter on “.” in MATLAB 7.0.4 (R14SP2) on MacOS