Importing a large dataset from Excel into Matlab
显示 更早的评论
Hello together,
I'm trying to import large numerical matrices e.g. [6000 x 6000], which should be no problem since I am running Matlab 64bit with 8gb ram.
However, I always get errors when I try to import the data at once. Is there any way to import the data without splitting it up into smaller pieces?
Best,
Christian
采纳的回答
Titus Edelhofer
2012-9-23
Hi Christian,
I'm not sure who is to "blame" that it does not work at once. What kind of error message do you get? Does it come from Excel (the ActiveX server that is employed when reading Excel files) or MATLAB?
What is so bad about importing in pieces, something like
X = zeros(6000, 6000);
for ii = 0:5
data = xlsread('myfile.xlsx', sprintf('A%d:ZZZ%d', ii*1000+1, ii*1000+1000));
X(ii*1000+(1:1000), :) = data;
end
Titus
1 个评论
Tom
2012-9-25
If you're going to use XLSREAD multiple times on the same file, it might be worth setting up a COM server* and working that way as it will be much faster (I think XLSREAD opens and closes a server and the file each time which wastes a lot of time)
*e.g.
actxserver('Excel.Application')
更多回答（1 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Spreadsheets 的更多信息
2012-9-23
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
