calculation within a matrix
显示 更早的评论
Consider a matrix with 1877958 rows and 7 columns. How can I subtract the first row, second row, third row... in column 1 from the first row, second row, third row, fourth row..... in column 7 and then divide the result by the first row, second row, third row, fourth row.... of column 3 until all 1877958 rows are covered. I want the result to be displayed as a 8th column.
采纳的回答
Geoff Hayes
2014-11-26
AA - if A is your matrix, then the calculation that you wish to perform could be written as
B = (A(:,7) - A(:,1))./A(:,3);
Then just append B as your 8th column of A as
A = [A B];
Try the above and see what happens!
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Creating and Concatenating Matrices 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
