你如何从MATLAB中的文本文件创建一个矩阵？ [英] How do you create a matrix from a text file in MATLAB?

问题描述

我有一个文本文件有4列，每列有65536个数据点。行中的每个元素都用逗号分隔。例如：

  X，Y，Z，AU 
 4010.0,3210.0，-440.0,0.0 
 4010.0,3210.0，-420.0,0.0 
等
  

所以，我有 65536行，每行有4个数据值，如上所示。我想把它转换成矩阵。我试图从文本文件导入数据到一个Excel文件，因为这种方式很容易创建一个矩阵，但我失去了一半以上的数据。 解决方案

如果文件中的所有条目都是数字，那么可以简单地使用 a = load（'file.txt'）。它应该创建一个65536x4矩阵 a 。它比 csvread

更容易

I have a text file which has 4 columns, each column having 65536 data points. Every element in the row is separated by a comma. For example:

X,Y,Z,AU
4010.0,3210.0,-440.0,0.0
4010.0,3210.0,-420.0,0.0
etc.

So, I have 65536 rows, each row having 4 data values as shown above. I want to convert it into a matrix. I tried importing data from the text file to an excel file, because that way its easy to create a matrix, but I lost more than half the data.

解决方案

If all the entries in your file are numeric, you can simply use a = load('file.txt'). It should create a 65536x4 matrix a. It is even easier than csvread

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