Why is the 'sum' function also outputting elements of my matrix?

Question

Tony 2016-3-6

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/271773-why-is-the-sum-function-also-outputting-elements-of-my-matrix

评论： Tony 2016-3-6

I have a column vector that I am trying to take the sum of, but I want it to display only the sum. Every time I use the sum function it also spits out every element in the matrix, along with the sum, which I do not want it to do. This seemed like an easy fix, but I couldn't find anything online.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

John D'Errico 2016-3-6

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/271773-why-is-the-sum-function-also-outputting-elements-of-my-matrix#answer_212540

在 MATLAB Online 中打开

Did you write your OWN function called sum? Type this on the command line:

which sum -all

If you have written a function called sum, it will then show up. Delete it, as sum is a tremendously important tool in MATLAB. At the very least rename it, or move it off your search path.

The fact is, sum does NOT do as you describe, so the only way what you describe can happen is if you did exactly what I suggest.

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Tony 2016-3-6

Wait, I made a dumb mistake. Didn't notice I forgot to suppress output of that matrix in another line of the code. I think after adding the sum(A) part I changed part of my code elsewhere as well leading me to believe the sum-function of Mat lab was glitched. Thanks for a timely response though.

请先登录，再进行评论。