How to grab first number from each line of a .txt file and store it in a vector?
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Preyanka Dey
on 9 Feb 2020
Commented: Preyanka Dey
on 10 Feb 2020
I want to grab first number from each line and store it in a vector. I am trying in following way. But, the written code is picking all numbers from the file. I have attached here the input.txt file. Can anybody please help me regarding this? Thank you.
My written code:
fid = fopen('input.txt');
matrix = fscanf(fid, '%d', [1,inf]);
disp(matrix)
Matlab Output:
1 3 4 8 2 -1 0 8 3 4 5 6 7 8 9 -2
I wanted to grab only(the first number from each line):
1 3 2 3 4 5 6 7 8
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Accepted Answer
Walter Roberson
on 9 Feb 2020
fid = fopen('input.txt');
matrix = cell2mat( textscan(fid, '%f%*[^\n]') ); %second field skips to end of line
fclose(fid);
4 Comments
Shuvashish Roy
on 10 Feb 2020
Thanks a lot for your time and patience. You are really very kind and awesome!
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