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

Question

Michael Jarboe 2015-12-23

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/261489-close-a-specific-text-file-while-leaving-different-text-files-open-matlab-r2011b

评论： Steven Lord 2018-2-3

fclose screen shot.PNG

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

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Michael Jarboe 2015-12-23

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/261489-close-a-specific-text-file-while-leaving-different-text-files-open-matlab-r2011b#answer_204134

编辑：Michael Jarboe 2015-12-23

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

2 个评论
显示无隐藏无

Jerin Joseph Koshy 2018-2-3

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

Steven Lord 2018-2-3

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.

请先登录，再进行评论。