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Reading a text file with variables and parentheses between

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Mahdi Khademishamami
评论： Mahdi Khademishamami 2023-4-5
Hello everyone,
I need that MATLAB read a text file in the format below, and seperate each variables with corresponding numerics, and write it back with the format of the text file again. I want to add another variable with the same number of numerical values and write it back to its initial format to be read again by my program.
species 1
species 2
species 3
(0.1
0.2
0
)
(.02
.1
.5
)
(0.1
.2
.3
)
Then, I want to add Species 4 with some numerical values in the same format as othe variables.
Thank you so much.

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回答（1 个）

Walter Roberson
Walter Roberson 2023-4-5
S = fileread('YourFile.txt');
S = regexprep(S, '\)', '%g\n)');
newS = compose(S, ValuesForSpecies4);
fid = fopen('NewFile.txt', 'w');
fwrite(fid, newS);
fclose(fid);
My guess is that you will want to go slightly further and also insert the name of the 4th species. Possibly with something like
S = regexprep(S, '\(', 'name of species 4\n(', 'once');
  1 个评论
Mahdi Khademishamami
Mahdi Khademishamami 2023-4-5
Hi Walter,
Thank you so much for the answer. I inserted your script in MATLAB, and it give me S as a character with htis output
species 1species 2species 3(0.10.20%g)(.02.1.5%g)(0.1.2.3%g)
What I want is actually identify and seperate the variables like Species 1=[0.1,0.2,0], Species2=[0.02,.1,.5], species3=[0.1,0.2,0.3], then add species4=[0,0,0] and then put it back at the same format like below
species 1
species 2
species 3
species4
(0.1
0.2
0
)
(.02
.1
.5
)
(0.1
.2
.3
)
(0
0
0
)

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