How to include a variable in "fopen" file name in a For loop?

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Ahmad Fakih
Ahmad Fakih 2019-4-17
评论： Ahmad Fakih 2019-4-17
Dear members,
This code edits a certain number in an input text and generates a new output file containing the new edited number. I want to generate many output files but the problem is that each time a new output file is generate it replaces the previous one since they will have the same name. I want to include a variable in the name that changes each time the code loops.
So I need to edit this line: f2d = fopen('output_matlab_i.txt','wt') where i will be variable from 1 to s and thus we will get: output_matlab_1, output_matlab_2, output_matlab_3...
Any help?
Thank you!
phi_rnd=lognrnd(log((m^2)/sqrt(std^2+m^2)),sqrt(log(std^2/(m^2)+1)),1,n)
indices = find(abs(phi_rnd)<28);
phi_rnd(indices) = [];
s=size(phi_rnd,2);
for i=1:s
vec=zeros(1,2);
vec = [phi_rnd(1,i),phi_rnd(1,i)];
cnt = 0;
rgx = '^(\s*\S+\s+)(\S+)(.+gamma.+)$';
f1d = fopen( 'input_matlab.txt','rt');
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
f2d = fopen('output_matlab.txt','wt');%>>>>>This is the line to be edited
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
while ~feof(f1d)
str = fgetl(f1d);
tkn = regexp(str,rgx,'once','tokens');
if ~isempty(tkn)
cnt = cnt+1;
str = sprintf('%s%#.14E%s',tkn{1},vec(cnt),tkn{3});
end
fprintf(f2d,'%s\n',str);
end
fclose(f1d);
fclose(f2d);
end

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采纳的回答

Fangjun Jiang
Fangjun Jiang 2019-4-17
for k=1:5
FileName=sprintf('output_matlab_%d',k)
end

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