Change/modify data in file?

9 次查看（过去 30 天）
Nora
Nora 2013-10-27
评论： Nora 2013-10-28
How would I write a script that would replace all occurrences of the old name with the new name and saving this as a new file. To replace the string, I used strrep(), but I am not sure how to use it and to also to save changes onto a new file. What is wrong with my script?
Data file looks as so:
Vendor Customer
Acme XYZ
Tulip2you Flowers4me
Flowers4me Acme
XYZ Cartesian
My script is:
data1 = 'vendorcust.dat';
FID = fopen(data1,'w');
file = type(data1);
newdata = strrep(file, 'Acme','NewAcme');
  1 个评论
Jan
Jan 2013-10-27
编辑：Jan 2013-10-27
Please explain, why you think, that something is wrong with the script. Do not let us guess, what you found out already.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Jan
Jan 2013-10-27
type is not thought for importing the contents of a file, but it works. I do not see any trial to create a new file.
FileName = 'vendorcust.dat'; % "data1" is a bad name for the name of a file
Data = fileread(FileName); % Import the file's contents
Data = strrep(Data, 'Acme', 'NewAcme'); % Apply the modification
FID = fopen('vendorcust_new.dat'); % Create a new file
if FID == -1, error('Cannot open file'); end % Always check for success
fwrite(FID, Data, 'char'); % Write data
fclose(FID); % Closing is important
This is a little bit too much help for a homework question. Please consider, that submitting it without mentioning the sources is cheating. But I'm tired and it is harder to assist than to solve here. Sorry!
  1 个评论
Nora
Nora 2013-10-28
This does make sense. Thank you for taking the time to explain each part!

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Structures 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by