How take Normalization for each column of 50x19 matrix?
6 次查看(过去 30 天)
显示 更早的评论
I have the dataset like shown in the image below
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/196654/image.jpeg)
0 个评论
回答(1 个)
Adam Danz
2018-9-26
编辑:Adam Danz
2018-9-26
There are many interpretations and methods of normalization and the term is often used to describe standardization or rescaling so you'll need to specify what method you wish to use. Below I provide an example how to normalize columns of a matrix so that all values are between 0 and 1 according to the max and min within each column.
% fake data
data = randi(10, 6, 5);
% Subtract min of each column
datamin = data - min(data, [], 1);
% Scale to the max of each column
dataNorm = datamin ./ max(datamin, [], 1);
Now all values are of dataNorm are between 0 and 1 according to the max and min within each column. If this is what you meant by 'normalize', you can apply this to your data.
If you wanted to normalize via z-score, check out the normalize() function (from release 2018a). It also offers additional methods .
dataNorm = normalize(data, 1);
4 个评论
Adam
2018-9-26
You may have to handle the case where a column is full of zeros though, if this is ever the case. You'll end up with Inf for your normalised values which may not be what you want (I assume you would want them to remain 0)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Annotations 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!