我知道这看起来微不足道，但是经过几个小时浏览网页寻找答案我开始放弃了！
我正在使用Matlab读取ASCII（字符串+双精度）文件，以便检索我需要的数据。我使用下面的代码：
fid = fopen(filename,'rt');
output_data = textscan(fid,'%s','Delimiter','\t');
它给了我一个484 x 1的单元格。到目前为止，它是预期的。
3.0 12.605 37.815 6.173 700.000 0.567 0.4212 0.8422 0.3014 74.897 49.907 30.974 -0.004 11.483 17.374 15.066 33.257 0.1870 50.605 0.8540 92.2821
3.5 10.804 37.815 6.173 700.000 -0.729 0.4593 0.8480 0.3051 129.674 68.391 77.109 -0.002 15.490 21.910 15.165 79.908 0.2830 68.236 0.8461 92.5326
4.0 9.454 37.815 6.173 700.000 -1.674 0.4731 0.8160 0.2855 199.409 85.954 138.884 -0.005 19.052 26.176 15.297 142.077 0.3371 86.101 0.8174 92.9654
4.5 9.198 41.389 6.756 766.150 -1.351 0.4734 0.7812 0.2661 284.050 104.149 215.800 -0.004 22.081 30.708 15.461 220.582 0.3676 105.286 0.7897 94.0197
5.0 8.993 44.963 7.340 832.300 -1.475 0.4729 0.7728 0.2617 389.300 127.195 312.298 -0.011 25.463 35.872 15.667 318.630 0.3871 128.221 0.7790 95.3147
5.5 8.992 49.457 8.073 915.500 -1.475 0.4729 0.7728 0.2617 518.157 153.904 431.486 -0.015 28.794 41.955 15.922 439.302 0.4010 154.751 0.7770 96.8529
现在它变得棘手：我想为每个“列”创建一个矩阵。您可以注意到，两列之间的空格因字符数而异。
这意味着我需要一个专栏：
3.0
3.5
4.0
etc...
下一个需要：
12.605
10.804
9.454
etc...
等到最后一个
92.2821
92.5326
92.9654
etc...
我发现这段代码可以提供帮助，但我无法对其进行修改以应对超过2列。这里的任何帮助将不胜感激。
str_cellarr ={
'12:34'
'13:45'
'12:45'};
split1 = regexp(str_cellarr, ':', 'split');
split1_2cols = mat2cell(vertcat(split1{:}),size(str_cellarr,1),[1 1]);
[var1,var2] = deal(split1_2cols{:});
var1 = str2double(var1)
var2 = str2double(var2)
答案 0 :(得分：2)
我假设你有一个字符串的单元格数组：
C = {'3.0 12.605 37.815 6.173 700.000 0.567 0.4212 0.8422 0.3014 74.897 49.907 30.974 -0.004 11.483 17.374 15.066 33.257 0.1870 50.605 0.8540 92.2821'
'3.5 10.804 37.815 6.173 700.000 -0.729 0.4593 0.8480 0.3051 129.674 68.391 77.109 -0.002 15.490 21.910 15.165 79.908 0.2830 68.236 0.8461 92.5326'
'4.0 9.454 37.815 6.173 700.000 -1.674 0.4731 0.8160 0.2855 199.409 85.954 138.884 -0.005 19.052 26.176 15.297 142.077 0.3371 86.101 0.8174 92.9654'
'4.5 9.198 41.389 6.756 766.150 -1.351 0.4734 0.7812 0.2661 284.050 104.149 215.800 -0.004 22.081 30.708 15.461 220.582 0.3676 105.286 0.7897 94.0197'
'5.0 8.993 44.963 7.340 832.300 -1.475 0.4729 0.7728 0.2617 389.300 127.195 312.298 -0.011 25.463 35.872 15.667 318.630 0.3871 128.221 0.7790 95.3147'
'5.5 8.992 49.457 8.073 915.500 -1.475 0.4729 0.7728 0.2617 518.157 153.904 431.486 -0.015 28.794 41.955 15.922 439.302 0.4010 154.751 0.7770 96.8529'};
然后
M = regexp(c, '\s+', 'split'); %// split at spaces. Gives cell array of cell arrays of strings
M = vertcat(M{:}); %// convert into 2D cell array of strings
M = str2double(M); %// convert into numeric 2D array (matrix)
给出一个包含所有数字的矩阵：
M =
Columns 1 through 12
3.0000 12.6050 37.8150 6.1730 700.0000 0.5670 0.4212 0.8422 0.3014 74.8970 49.9070 30.9740
3.5000 10.8040 37.8150 6.1730 700.0000 -0.7290 0.4593 0.8480 0.3051 129.6740 68.3910 77.1090
4.0000 9.4540 37.8150 6.1730 700.0000 -1.6740 0.4731 0.8160 0.2855 199.4090 85.9540 138.8840
4.5000 9.1980 41.3890 6.7560 766.1500 -1.3510 0.4734 0.7812 0.2661 284.0500 104.1490 215.8000
5.0000 8.9930 44.9630 7.3400 832.3000 -1.4750 0.4729 0.7728 0.2617 389.3000 127.1950 312.2980
5.5000 8.9920 49.4570 8.0730 915.5000 -1.4750 0.4729 0.7728 0.2617 518.1570 153.9040 431.4860
[...]
因此，您所需的列矩阵仅为M(:,1)，M(:,2)等