Problem using 'dlmwrite' into .txt file which contains 19/20 digit intergers
조회 수: 1 (최근 30일)
이전 댓글 표시
I have a csv file (id.txt) which contains two columns having 19/20 digit integers.
I am executing the following commands in matlab workspace :-
(1) load id.txt
(2) dlmwrite('id_new.txt',id,'delimiter','\t','precision','%19i')
After executing the above commands, the last 3/4 digits of 2nd column in the file 'id_new.txt' gets changed, although the 1st column remains as it is. Can anyone please help me in sort out this problem.
The screenshots of two files id.txt and id_new.txt are attached herewith.
댓글 수: 0
채택된 답변
Chunru
2021년 12월 10일
MATLAB double data type cannot hold so many digits in your imput data. It will round off the data to what-so-ever a double type can hold.
If you want to ensure that no information is lost, you can always read in the data as strings and then write the data as strings.
댓글 수: 17
Walter Roberson
2021년 12월 10일
fid = fopen('A.txt');
A_data = cell2mat(textscan(fid, '%u64,%u64', 'headerlines',1));
fclose(fid)
fid = fopen('B.txt');
B_data = cell2mat(textscan(fid, '%u64', 'headerlines',0));
fclose(fid)
dlmwrite('id_new.txt',A_data, 'delimiter', '\t', 'precision', '%u')
추가 답변 (0개)
참고 항목
카테고리
Help Center 및 File Exchange에서 Text Files에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!