Handling of large string array
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
Hi,
I am dealding with a 22,000,000 x 1 string array, which causes Matlab real problems. I import the data from a .csv file of about 1gig size. But when I save it in Matlab as a .mat file, it blows up to over 9gig. How can I save this vector more efficiently?
Best
1 Kommentar
per isakson
am 4 Apr. 2015
Bearbeitet: per isakson
am 4 Apr. 2015
I cannot reproduce your problems on R2013b,64bit,Win7
>> str = char( randi([32,112],22e6,1) );
>> save( 'd:\tmp\test.mat', 'str' )
creates a file that is 18MB.
Antworten (1)
dpb
am 4 Apr. 2015
Cast to char() if not (default Matlab storage is double). This will be 4:1 reduction as Matlab character is 16-bit. If you're using a ASCII code, you can save another factor of 2 by converting to uint8 but Matlab may then get confused if try to use the data as character.
0 Kommentare
Siehe auch
Kategorien
Mehr zu String Parsing 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!