How to read data one by one

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Joe kiao 2015-1-22

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链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/171233-how-to-read-data-one-by-one

评论： Matz Johansson Bergström 2015-1-23

采纳的回答： Matz Johansson Bergström

在 MATLAB Online 中打开

The file is like

0.5 0.6 0.7

0.0 -2.5 6.3

The first line is the number of points. The others are the coordinates of those points x y z.

In C++, we have

   ifstream fin("coordinate.txt"); 
   fin>>num;
   for(int i=0; i<num; i++)
{
      fin>>array[i][0]>>array[i][1]>>array[i][2];
}
What are the corresponding code in MATLAB?

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Matz Johansson Bergström 2015-1-23

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/171233-how-to-read-data-one-by-one#answer_165663

在 MATLAB Online 中打开

It should be sufficient to write

filename='coordinates.txt';
[x,y,z] = dataread('file', filename, '%f%f%f', 'delimiter',...
    ' ', 'headerlines', 1);

Thanks Matz. But you know the above file is just an demonstration. So my question is: is there a command in MATLAB that will read the data one by one and it will automatically goes to a new line when comes to the end of one line?

Matz Johansson Bergström 2015-1-23