How to convert a matrix into a vector

2018 1 7
2 个回答
回答已采纳
更新时间：2019 1 5
79 次查看（30 天）

0 个投票

I have a matrix and i need to convert it into a vector. Basically i need to remove the dependency of one parameter.Please see the image file i have attached.

请先登录，再回答此问题。

 采纳的回答

Star Strider
Star Strider 2018-1-7

1 个投票

You did not state the result you want. One obvious option is to use the reshape (link) function.

5 个评论
显示 3更早的评论 隐藏 3更早的评论

praveen
praveen 2018-1-8
My objective is to decompose or do some factorization so that the matrix will become a vector with same number of rows with only one column.
Image Analyst
Image Analyst 2018-1-8
编辑：Image Analyst 2018-1-8
How about this to convert the matrix into a column vector
param2 = data2d(:,1); % Convert column 1 of 2-d data matrix into a column vector.
If not, then state your rule(s) for getting each row of your desired output vector.
Star Strider
Star Strider 2018-1-8
@praveen — The svd (link) function comes quickly to mind.
From the documentation:
  • s = svd(A) returns the singular values of matrix A in descending order.
praveen
praveen 2018-1-9
Hello Star Strider this is exactly the concept i was looking for. I tried this and it gave me a single column vector but with reduced number of rows.If you look at the image i posted in the question the output will have equal number of rows when compared to the input.Please let me know if a modified SVD or any other similar concept is capable of doing this. Thank you very much for the answer.
Star Strider
Star Strider 2018-1-9
If the mathematics are not important and any procedure will do, the easiest approach would likely be something like:
Result = mean(A,2,'omitnan')
where ‘A’ is your matrix.

请先登录，再进行评论。

更多回答（1 个）

5 个投票

%%%% Converting Matix to vector
A = [1 2 3; 4 5 6; 7 8 9] % Example matrix
reshape(A,[],1) % convert matrix to column vector
reshape(A,1,[]) % convert matrix to row vector

类别

在 帮助中心 和 File Exchange 中查找有关 Mathematics and Optimization 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