How to import data from a csv that contains strings numbers and blank cells
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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
Roberto Herrera-Lara
2015-4-14
do you have any error? or message?
Roberto Herrera-Lara
2015-4-14
how much ram do you have?
R2
2015-4-14
Philip Caplan
2015-4-15
Have you tried using "csvread" to import the entire column? For some examples, please see:
R2
2015-4-16
采纳的回答
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
2015-4-14
0 个投票
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
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