Importing only a fraction of a database using dataset

1 次查看（过去 30 天）
Sebastiano delre
Sebastiano delre 2016-5-14
评论： Sebastiano delre 2016-5-15
I have a large dataset in csv format (400MB). How can I import in MatLab only the first 500 rows?
  1 个评论
Sebastiano delre
Sebastiano delre 2016-5-14
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?

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Azzi Abdelmalek
Azzi Abdelmalek 2016-5-14
nc=6; % Number of column in your csv file
nr=500
data=csvread('file.csv',0,0,[0 0 nr-1 nc-1])
  4 个评论
显示 2更早的评论
Walter Roberson
Walter Roberson 2016-5-14
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 2016-5-15
Actually I have R2014b now. readtable() works fine and it is very very fast. Thanks!

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Data Import and Analysis 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by