Close a specific text file, while leaving different text files open (MatLab R2011b)

Mathworks Reference: http://www.mathworks.com/help/matlab/ref/fclose.html?refresh=true

I am trying to close 1 of 4 open text files (leaving the other 3 open). I referred to the website above 'fclose'. When I try and close the file using: fclose(myfileid) the following error is shown "Error using fclose String argument must be 'all'"

fclose('all') works for closing ALL files but I NEED to keep the other 3 files open. Is this because I am working with an other version of MatLab? (R2011b) If so is there a workaround?

>> x = 'Cycle_HS1.txt'

x =

Cycle_HS1.txt

>> fopen(x)

ans =

     3

>> fclose(x) Error using fclose String argument must be 'all'.

>> fclose('all')

ans =

     0

Answer 1

[Michael Jarboe]

Figured it out!

this works
  % code below
end
x = 'Cycle_HS1.txt'
y = fopen(x)
(MatLab returns) y = 3
fclose(y)
(MatLab returns) ans = 0 (file is closed)
end

[Jerin Joseph Koshy]

x = 'Cycle_HS1.txt'; y = fopen(x) i am getting y=-1????? can u pls tell me the reason??????

[Steven Lord]

Call fopen with two outputs. When the first output is -1, read the message in the second output for more information about why MATLAB was unable to open the file.