Help with saving data in .txt file

2015 1 11
1 个回答
回答已采纳
更新时间：2015 1 12
4 次查看（30 天）

0 个投票

Hi guys, I have a simple question about how to save data. Let's suppose I have two vectors, x and y; I want to save them as a .txt file having two columns given by x and y. I want also to decide the name of the file (e.g. 'myfile.txt') and the directory of the folder where I save the file (e.g. 'C:\\User\Desktop\MyFolder\') in the code. Thank you!

请先登录，再回答此问题。

 采纳的回答

Image Analyst
Image Analyst 2015-1-11
编辑：Image Analyst 2015-1-12

0 个投票

Try this:
% Get the name of the file that the user wants to save.
startingFolder = userpath
defaultFileName = fullfile(startingFolder, '*.*');
[baseFileName, folder] = uiputfile(defaultFileName, 'Specify a file');
if baseFileName == 0
% User clicked the Cancel button.
return;
end
fullFileName = fullfile(folder, baseFileName)
fid = fopen(fullFullFileName, 'wt');
if fid ~= -1
for row = 1 : length(x)
fprintf(fid, '%f, %f\n', x(k), y(k));
end
fclose(fid);
end

3 个评论
显示 1更早的评论 隐藏 1更早的评论

aurc89
aurc89 2015-1-12
I tried like this:
% Get the name of the file that the user wants to save.
x=[1 2 3 4 5];
y=[2 4 6 8 10];
startingFolder = userpath
defaultFileName = fullfile(startingFolder, '*.*');
[baseFileName, folder] = uiputfile(defaultFileName, 'Specify a file');
if baseFileName == 0
% User clicked the Cancel button.
return;
end
fullFileName = fullfile(folder, baseFileName)
fid = fopen(fullFileName, 'wt');
if fid ~= -1
for row = 1 : length(x)
fprintf('%f, %f\n', x(row), y(row));
end
fclose(fid);
end
and, if 'mydata' is the name of the file I want to save, it returns:
startingFolder =
C:\Users\Documents\MATLAB;
fullFileName =
C:\Users\\Desktop\MyFolder\mydata
1.000000, 2.000000
2.000000, 4.000000
3.000000, 6.000000
4.000000, 8.000000
5.000000, 10.000000
but the file 'mydata' is empty!
Image Analyst
Image Analyst 2015-1-12
Try putting the file handle into fprintf:
fprintf(fid, '%f, %f\n', x(row), y(row)); % To file.
fprintf(1, '%f, %f\n', x(row), y(row)); % To command window.

请先登录，再进行评论。

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Setup and Configuration 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