Hi,
You should try this code.
- The reading section will give you 'text_cell' as a cell array that contains all text data, each text line as a cell of the cell array.
- you can edit or update any cell value as like in section updating data.
- you can rewrite an updated file as like section writing updated text file.
- you can find your expected header text position by comparing '*' with each cell array text by using function strfind.
hope it will help you.
clc
clear
%% Reading text file
file_name='setup_generic.txt';
file_id=fopen(file_name,'r');
text_cell=cell(1);
while 1
text_line_read=fgetl(file_id);
if text_line_read == -1
break
else
text_cell(end,1)=cellstr(text_line_read);
text_cell(end+1,1)=cell(1);
end
end
fclose(file_id);
%% updating data
% lets change cell array index 2 which is 30.0 to 34.0
text_cell{2,1}='34.0';
%% write updated text file
file_id=fopen(file_name,'w');
for i=1:length(text_cell)
fprintf(file_id,'%s\n', text_cell{i});
end
fclose(file_id);
