利用matlab提取文本间的数据

我正在尝试导出一组数据，对此我非常了解。所述数据具有以下结构：

#              ************************************
#              *****    GLOBAL ATTRIBUTES    ******
#              ************************************
#

#     PROJECT                         THEMIS
#
UT                                             UT      BX_FGL-D      BY_FGL-D      BZ_FGL-D
                                                         (@_1_)        (@_2_)        (@_3_)
dd-mm-yyyy hh:mm:ss.mil.mic.nan.pic           sec        nT_GSE        nT_GSE        nT_GSE
21-05-2015 00:00:00.223.693.846.740   1.43208E+09       1.14132       9.14226       27.1446
21-05-2015 00:00:00.473.693.845.716   1.43208E+09       1.11194       9.16192       27.1798
21-05-2015 00:00:00.723.693.844.692   1.43208E+09       1.12992       9.11103       27.1595
21-05-2015 00:00:00.973.693.843.668   1.43208E+09       1.15966       9.15324       27.1589
21-05-2015 00:00:01.223.693.846.740   1.43208E+09       1.20576       9.14420       27.1388
21-05-2015 00:09:59.973.693.843.668   1.43208E+09       1.97445       8.66407       26.1837
#  
# Key Parameter and Survey data (labels K0,K1,K2) are preliminary browse data.
# Generated by CDAWeb on: Mon May 27 06:01:29 2019

我要求将写在“dd-mm-yyyy…”和“##Key-Parameter”之间的内容导出到列中。 例如，第一行21-05-2015 00:00:00.223.693.846.740 1.43208E+09 1.14132 9.14226 27.1446必须出口到2152015、00,00,002369384740、1.43208E+09、1.14132、9.14226和27.1446

类似的问题也在讨论中，但我相信我的数据是复杂的，我不能做更多。我所能做的就是编写一部分代码，一直读到“dd-mm-yyyy”：

clear;clc;close all;
f = fopen('dataa_file.txt');
line = fgetl(f);
while isempty(strfind(line, 'nT_GSE'))
    if line == -1 %// If we reach the end of the file, get out
        break;
    end
    line = fgetl(f);
end

---

任何帮助都将不胜感激……

这似乎有效。它假定

• 包含数字的第一行紧跟在以

  'dd-mm-yyyy'

  开头的行之后
• 包含数字的最后一行是以

  “#键参数”

  开头的行上方的两行

代码：

---

谢谢，成功了。如果你能详细说明所使用的各种命令，那将是非常有益的。。

t = fileread('file.txt'); % Read the file as a character vector
t = strsplit(t, {'\r' '\n'}, 'CollapseDelimiters', true); % Split on newline or carriage
    % return. This gives a cell array with each line in a cell
ind_start = find(cellfun(@any, regexp(t, '^dd-mm-yyyy', 'once')), 1) + 1; % index of
    % line where the numbers begin: immediately after the line 'dd-mm-yyyy...'
ind_end = find(cellfun(@any, regexp(t, '^# Key Parameter', 'once')), 1) - 2; % index of
    % line where numbers end: two lines before the line '# Key Parameter...'
result = cellfun(@(u) sscanf(u, '%d-%d-%d %02d:%02d:%02d.%d.%d.%d.%d %f %f %f %f').', ...
    t(ind_start:ind_end), 'UniformOutput', false);
    % Apply sscanf to each line. The format specifier uses %d where needed to prevent
    % the dot from being interpreted as part of a floating point number. Also, the
    % possible existence of leading zeros needs to be taken into account. The result is
    % a cell array, where each cell contains a numeric vector corresponding to one line
result = cell2mat(result.'); % convert the result to a numerical array