How can i find the maximum of three variables?

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Carole
Carole 2012-11-27
编辑： Sarah Crimi 2018-11-16
Hi, I have to find the maximum of three variables A, B, C and store the result in D. thanks

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回答（5 个）

Matt J
Matt J 2012-11-27
D=max([A,B,C]);
Jan
Jan 2012-11-27
How would you find the maximum of two variables?
docserach maximum
Then if you have the maximum of two variables, you can compare it to the third one.
pshymn
pshymn 2017-4-13
编辑：pshymn 2017-4-13
maybe, i am a little late, but i experienced the same problem. here is my solution. it works, tried. function which finds maximum of three variable.
function [p] = MAX(g,h,j)
if g>h && g>j
p=g;
elseif h>g && h>j
p=h;
else
p=j;
end
Image Analyst
Image Analyst 2012-11-27
In general, for A, B, and C being numerical arrays of any size (possibly different than each other):
% Define 3 double matrixes of different sizes
A = rand(3);
B = rand(4);
C = rand(5);
% Now get the max overall
D = max([A(:), B(:), C(:)]) % Note use of (:) to turn arrays into vectors.
If they're cell arrays or structures though, let us know because that would be different.
  1 个评论
Jan
Jan 2012-11-28
If A, B, C hav different sizes, [A(:), B(:), C(:)] fails. But [A(:); B(:); C(:)] with the semicolons for vertical concatenation works.

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Sarah Crimi
Sarah Crimi 2018-10-5
编辑：Sarah Crimi 2018-10-5
if it is vectors of different sizes, you would have to do max(max(a),max(b)),max(max(b),max(c)). So, it takes max of the first and second vectors and compares the values, and max of the second and third vectors, then takes the max of those two numbers.
  2 个评论
Stephen23
Stephen23 2018-10-5
编辑：Stephen23 2018-10-5
"if it is vectors of different sizes you would have to do..."
Or you can just call max once (as Jan Simon showed earlier):
max([a(:);b(:);c(:)])
Sarah Crimi
Sarah Crimi 2018-11-16
编辑：Sarah Crimi 2018-11-16
Oh yes, I see. This makes it into one vector then takes the max.

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