MATLAB: Trouble using fopen

Question

I am trying to do batch processing. The list of text files to be processed are in a text file which I am able to read into a string. If I try to run fopen again by passing the string as the argument to fopen, fopen fails saying : No such file or directory. Instead, if I hard code the filename in the fopen statement the file is opened successfully.

EDU>> fopen('./nmos_1_50n.dat', 'r')
ans =
       5
  EDU>> mystring
mystring =
nmos_1_50n.dat
EDU>> [fid2, msg] = fopen(mystring, 'r')
fid2 =
      -1
msg =
No such file or directory
      Please help.

Answer 1

We cannot tell from here whether mystring might have trailing blanks.