max(dg) returns "Subscript indices must either be real positive integers or logicals."

Question

Rahul Pillai 2017-11-25

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/369126-max-dg-returns-subscript-indices-must-either-be-real-positive-integers-or-logicals

回答： John D'Errico 2017-11-25

Any reasons why? dg is an n x 1 column vector.

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 2017-11-25

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/369126-max-dg-returns-subscript-indices-must-either-be-real-positive-integers-or-logicals#answer_293053

Simple. Don't create a variable named max. How should MATLAB know if you do that, that then when you try to use the FUNCTION named max, what you really want to do? MATLAB assumes that you know what you are doing.

So when you created a variable max, then used the form max(dg), MATLAB assumes that you knew what you were doing, that you did this for a good reason. It then tries to index the variable max, using dg as an index.