MATLAB: How to Split a Text File into Many Text Files

split text file

I have a text file which contains many Paragraphs.

Each Paragraph starts with a "greater than" ( > ) symbol.

I would like to split each paragraph into new text file using MATLAB.

Is it possible ?

Best Answer

Does the ">" appear as first character in a line or anywhere? Assuming the first:

Str   = fileread(FileName);
CStr  = regexp(Str, '\n', 'split');
Index = [find(strncmp(CStr, '>', 1)), length(CStr) + 1];
for iP = 1:length(Index - 1);
  FID = fopen(sprintf('Paragraph%2d.txt', iP), 'w');
  if FID == - 1, error('Cannot open file for writing'); end
  fprintf('%s\n', CStr{Index(iP):Index(iP + 1) - 1});
  fclose(FID);
end

Related Solutions

MATLAB: To read a text file using matlab

Use fopen to open the file and then use fscanf or fgetl to read in the content. You can also use fread. For example, the following code reads the first line of the text.

fid = fopen(v,'r');
tline = fgetl(fid);
fclose(fid)

Just to remember close the file using fclose afterwards.

doc fopen
doc fclose
doc fread
doc fscanf
doc fgetl

MATLAB: Text file help.

FID = fopen(FileName, 'r');
if FID == -1; error('Cannot read file'); end
Data = textscan(FID, '%s', 'delimiter', '\n', 'whitespace', '');
fclose(FID);
CStr = Data{1};
startWith_at = strncmp(CStr, '@', 1);
last_at = find(startWith_at, 1, 'last');
last_number = sscanf(CStr{last_at}, '@%d');
% Delete trailing lines:
CStr(last_at + 1:end) = [];

Do you want to write the file afterwards?

FID = fopen(FileName, 'w');
if FID == -1; error('Cannot read file'); end
fprintf(FID, '%s\n', CStr{:});
fclose(FID);

Best Answer

Related Solutions

MATLAB: To read a text file using matlab

MATLAB: Text file help.

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