读取文本文件，matlab [英] Reading text file, matlab

问题描述

我正在读matlab中的文本文件'mytext.text'。数据文件如下所示：

  1 -4436.6910 415.1843 -3019.7497 1,3,4,5,21,23 
 
 2 -4366.4541 1353.9975 -3085.1166 1,3,4,23 
  

....

我不知道Col5的长度。如何在matlab中读取它？

  fid = fopen（'mytext.text'，'r'）; 
 
 Grdata = textscan（fid，'％d％f％f％f（Col 5应该是什么）％这行是
问题％
 
 fclose fid）; 
  

任何帮助

解决方案

一个可能性是读取最后一列作为字符串，然后将其转换为数字。

  fid = fopen（'file.dat'，'r'）; 
 C = textscan（fid，'％f％f％f％f％s'，... 
'Delimiter' '，'MultipleDelimsAsOne'，true，'CollectOutput'，true）; 
 fclose（fid）; 
 
 C = [num2cell（C {1}）cellfun（@ str2num，C {2}，'UniformOutput'，false）] 
  

生成的单元格数组：

  C = 
 [1] [-4436.7] [415.18] [-3019.7] [1x6 double] 
 [2 ] [-4366.5] [1354] [-3085.1] [1x4 double] 
  

>

 >> C {1，end} 
 ans = 
 1 3 4 5 21 23 
>&g t; C {2，end} 
 ans = 
 1 3 4 23 
  

I am reading a text file 'mytext.text' in matlab. Data file looks like:

1   -4436.6910  415.1843    -3019.7497  1,3,4,5,21,23

2   -4366.4541  1353.9975   -3085.1166  1,3,4,23

....

I don't know the length of Col5. How can I read it in matlab?

fid=fopen( 'mytext.text','r');

Grdata = textscan(fid, '%d %f %f  %f  (Col 5 what should be)% This line is 
problem%  

fclose(fid); 

Any help.

解决方案

One possibility is to read the last column as string, then convert it to numbers afterward.

fid = fopen('file.dat','r');
C = textscan(fid, '%f %f %f %f %s', ...
    'Delimiter',' ', 'MultipleDelimsAsOne',true, 'CollectOutput',true);
fclose(fid);

C = [num2cell(C{1}) cellfun(@str2num, C{2}, 'UniformOutput',false)]

The resulting cell-array:

C = 
    [1]    [-4436.7]    [415.18]    [-3019.7]    [1x6 double]
    [2]    [-4366.5]    [  1354]    [-3085.1]    [1x4 double]

with:

>> C{1,end}
ans =
     1     3     4     5    21    23
>> C{2,end}
ans =
     1     3     4    23

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