Borrar filtros
Borrar filtros

Importing only a fraction of a database using dataset

1 visualización (últimos 30 días)
I have a large dataset in csv format (400MB). How can I import in MatLab only the first 500 rows?
  1 comentario
Sebastiano delre
Sebastiano delre el 14 de Mayo de 2016
Actually csvread does not work for me because my data contain not only numerical variables. I have also strings and cells. Is there a way I can use the function dataset?

Iniciar sesión para comentar.

Respuesta aceptada

Azzi Abdelmalek
Azzi Abdelmalek el 14 de Mayo de 2016
nc=6; % Number of column in your csv file
nr=500
data=csvread('file.csv',0,0,[0 0 nr-1 nc-1])
  4 comentarios
Walter Roberson
Walter Roberson el 14 de Mayo de 2016
xlsread() accepts range arguments.
You have R2013b according to your other postings; you could consider readtable() . I do not know how fast that would be; I seem to remember later releases made it faster.
Sebastiano delre
Sebastiano delre el 15 de Mayo de 2016
Actually I have R2014b now. readtable() works fine and it is very very fast. Thanks!

Iniciar sesión para comentar.

Más respuestas (0)

Categorías

Más información sobre Large Files and Big Data en Help Center y File Exchange.

Etiquetas

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by