how to sum up all rows and put the value in a new column next to the last one

1 次查看（过去 30 天）

Zhiyu 2013-1-10

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/58428-how-to-sum-up-all-rows-and-put-the-value-in-a-new-column-next-to-the-last-one

Hello I am trying to sum up all the rows in a matrix, and put the sum in a new column just next to the last one in the same matrix. the number of rows is 1340, but the number of columns is random, does anyone have any idea how to make it in matlab?

many thanks!

2 个评论
显示无隐藏无

José-Luis 2013-1-10

在 MATLAB Online 中打开

What have you tried so far? Please look at the documentation:

doc sum

Jan 2013-1-10

Please use meaningful tags. All questions in a Matlab forum concern "Matlab". Thanks.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Jan 2013-1-10

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/58428-how-to-sum-up-all-rows-and-put-the-value-in-a-new-column-next-to-the-last-one#answer_70703

编辑：Jan 2013-1-10

在 MATLAB Online 中打开

A = rand(15, 1340);  % Test data
B = [A, sum(A, 2)];

Is this solution surprising to you? If so, please read the "Getting Started" chapters of the documentation, where such fundamental basics are explained exhaustively.