how to remove values based on space delimiter
1 visualizzazione (ultimi 30 giorni)
Mostra commenti meno recenti
the values present in my file is
f 1 2 3
f 1 2 3
f 1 2 3 4
f 2 3 4
f 4 5 6 7
i have to read every line and check for 4 values separated by space
ie f 1 2 3
if that line has 5 values the last value should get removed
ie
my output should be
f 1 2 3
f 1 2 3
f 1 2 3
f 2 3 4
f 4 5 6
does any built in is there ..pls help....thanks in advance
0 Commenti
Risposta accettata
Walter Roberson
il 24 Dic 2012
S = fileread('YourFileName.txt'); %read file
NewS = regexprep(S, '(?m)(?-s)^(\w+\s+\w+\s+\w+).*', '$1'); %do edit
fid = fopen('YourNewFile.txt, 'wt'); %write out new version
fwrite(fid, NewS);
fclose(fid);
3 Commenti
Walter Roberson
il 24 Dic 2012
'(?m)(?-s)^(\w+\s+[0-9\\]+\s+[0-9\\]+).*'
This presumes that the first thing on the line will not be of the same form, and that the other values only have digits and backslash.
Più risposte (0)
Vedere anche
Categorie
Scopri di più su Annotations in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!