Efficient splitting of strings
4 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
Hamad Alsayed
am 21 Mär. 2016
Kommentiert: Hamad Alsayed
am 21 Mär. 2016
I have a cell array of strings which I would like to split into sub-arrays as follows:
Suppose a date-time cell array reads as:
inputArray =
'20150316 07:20:39:380941'
'20150317 07:20:39:380941'
'20150318 07:20:39:380941'
'20150319 07:20:39:380941'
I would like the output to be
outputArray =
'20150316'
'20150317'
'20150318'
'20150319'
Currently I am doing it by
outputArray = cellfun(@(x) x(1:8),inputArray,'uni',false);
which works just fine, however for inputArray into the millions of elements, this process is slow.
Is there a more efficient method which can perform the above? I know for sure that the structure of the strings in the array is fixed (i.e. the string length is always 24 and the first 8 elements are YYYYMMDD).
0 Kommentare
Akzeptierte Antwort
KSSV
am 21 Mär. 2016
You can read all the strings into a character matrices and extract what you want. Example:
k = ['20150316 07:20:39:380941'
'20150317 07:20:39:380941'
'20150318 07:20:39:380941'
'20150319 07:20:39:380941'];
k(:,1:9)
Have you tried this?
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Characters and Strings 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!