Reading combinations of strings and numbers from a text file

Question

bio lim 2016-10-31

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/309897-reading-combinations-of-strings-and-numbers-from-a-text-file

评论： Jeremy Hughes 2016-11-1

I have a text file of a TLE as shown below.

24652U 96063A   96318.74847837 -.00000020  00000-0  00000+0 0    
24652   3.9929 210.6007 7281127 177.7757 190.4436  2.27277888    
24652U 96063A   96319.62211352 -.00000020  00000-0  00000+0 0    
24652   3.9929 210.3183 7284735 178.4392 185.2995  2.27373269    
24652U 96063A   96319.62351606  .00008082  00000-0  30835-2 0    
24652   3.9764 210.1654 7280836 178.5436 186.6267  2.27380102    
24652U 96063A   96319.62356237  .00009638  00000-0  38025-2 0    
24652   3.9632 210.3512 7280110 178.4006 186.6625  2.27374993    
24652U 96063A   96320.05952563 -.00002597  00000-0 -98092-3 0    
24652   3.9623 210.1661 7275699 178.7092 185.6294  2.27896863

I am trying to separate the data into two cells; one starts with 1, and the other starts with 2. I can get the first two lines as follows.

fid_iss   = fopen('iss.txt');
line1 = textscan(fid_iss, '%f%s%s%f%f%s%s%f%f\r\n %*[^\n]');
line2 = textscan(fid_iss, '%f%f%f%f%f%f%f%f\r\n %*[^\n]');
fclose(fid_iss);

However, I am not getting the remaining lines. How can I store all lines that starts with 1 into a single cell?

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Jeremy Hughes 2016-11-1

在 MATLAB Online 中打开

Start by reading two lines as one format:

fid_iss = fopen('iss.txt');
line = textscan(fid_iss, '%f%s%s%f%f%s%s%f%f%*[^\r\n]%*[\r\n]%f%f%f%f%f%f%f%f');
fclose(fid_iss);

Then you can extract:

line1 = line(1:9);
line2 = line(10:end);

I think that should do what you're looking for.

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Answer 1

KSSV 2016-10-31

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/309897-reading-combinations-of-strings-and-numbers-from-a-text-file#answer_241360

在 MATLAB Online 中打开

fid = fopen('TLE.txt','rt') ;
S = textscan(fid,'%s','delimiter','\n') ;
fclose(fid) ;
S = S{1} ;
% get 1 (odd position)
S1 = S(1:2:length(S)) ;
% get  2 (even position)
S2 = S(2:2:length(S)) ;