how to merge multiple files ?

Question

Lilya 2023-3-17

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1930555-how-to-merge-multiple-files

评论： Lilya 2023-3-17

采纳的回答： Antoni Garcia-Herreros

在 MATLAB Online 中打开

Hi- I want to merge multiple files into one file by selecting one of those files specifically to be the header

I've tried the following code, which I found in the Matlab community. But the first line is not the header I want.

the name of the header file is: header.405

any help will be appreciated

projectdir = uigetdir('pub/eph/planets/ascii/de405');
dinfo = dir( fullfile(projectdir, '*.405') );
filenames = fullfile( projectdir, {dinfo.name} );
output='merged.txt';
fidout=fopen(output,'w');
for cnt=1:length(dinfo)
  fprintf(fidout,'%s\n',dinfo(cnt).name);
  fidin=fopen(dinfo(cnt).name);
  fwrite(fidout,fread(fidin));
  fprintf(fidout,'\n');
  fclose(fidin);
end
fclose(fidout);

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Answer 1

Antoni Garcia-Herreros 2023-3-17

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1930555-how-to-merge-multiple-files#answer_1195175

在 MATLAB Online 中打开

Hello Lilya,

I'm guessing the problem is your header.405 is not the first file listed in dinfo. What you could do i find the position of your header file and set it to be the first.

Index = find(contains(filenames,'header')); % Find the position of the header file
F=[filenames(Index),filenames];
F(Index+1)=[];
output='merged.txt';
fidout=fopen(output,'w');
for cnt=1:length(F)
  fprintf(fidout,'%s\n',F(cnt));
  fidin=fopen(F(cnt));
  fwrite(fidout,fread(fidin));
  fprintf(fidout,'\n');
  fclose(fidin);
end
fclose(fidout);