Problem using 'dlmwrite' into .txt file which contains 19/20 digit intergers
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
Apashanka Das
am 10 Dez. 2021
Kommentiert: Apashanka Das
am 11 Dez. 2021
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.
0 Kommentare
Akzeptierte Antwort
Chunru
am 10 Dez. 2021
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.
17 Kommentare
Walter Roberson
am 10 Dez. 2021
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')
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Text Files finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!