How to change a matrix within a function

2017 11 22
1 个回答
回答已采纳
更新时间：2017 11 22
5 次查看（30 天）

0 个投票

I want to pass a matrix into a function and to change the matrix within the function. For example, in my case I want to set some elements of the matrix:
function setRedComponent(Image,val)
Image(:,:,1)=val;
end
Image is a 3D matrix representing an RGB image.
I know I can return the image, but I prefer to use the function as follows:
I=zeros(64,64,3);
setRedComponent(I,255);
and not
I=zeros(64,64,3);
I = setRedComponent(I,255);

请先登录，再回答此问题。

 采纳的回答

Walter Roberson
Walter Roberson 2017-11-22

1 个投票

function setRedComponent(Image,val)
Image(:,:,1)=val;
inname = inputname(1);
if ~isempty(inname)
assignin('caller', inname, Image);
end
end
This style of coding is not recommended at all!

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Images 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