How to import data from a csv that contains strings numbers and blank cells

4 次查看（过去 30 天）
R2
R2 2015-4-13
评论： Star Strider 2015-4-19
I have a csv that contains a single column with a lot of data in it. The data is a variety of strings, numbers and blanks, where I want to keep it in the exact order including all of the blank cells. So an example of the data would be:
A
05
G
12
I have tried to use importdata and this works perfectly, the problem is my csv has over 1 million rows and for some reason using importdata only imports to just over the first 100k rows.
Any help would be appreciated!
  5 个评论
显示 3更早的评论
R2
R2 2015-4-16
csvread does not work as it only accepts numerical values, as I have text in the column as well as numbers I get an error message.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Star Strider
Star Strider 2015-4-16
I would experiment with textscan.
Example:
fidi = fopen('filename.csv');
D = textscan(fidi, '%s', 'Delimiter',',');
fclose(fidi);
This should read everything in as a cell array of strings. (I don’t have your file, so this is just a guess on my part. I will leave it to you to experiment.) You may need other arguments in the textscan call (such as 'EndOfLine'), but it may work as described here without any changes.

更多回答（1 个）

Roberto Herrera-Lara
100k rows, and if you do the same process several times(10 times) and then you concatenate the matrixs, i dont know, perhaps works!! =) Divide and conquer algorithm

类别

在 Help Center 和 File Exchange 中查找有关 Large Files and Big Data 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