How to get arg min of an N-dimensional Matrix ?

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Rawan hamdi
Rawan hamdi 2013-4-15
回答： Steven Lord 2019-4-30
Hi, i'm having an image of size[280,307,191] and i want to get the argmin of it,Any help?

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James Tursa
James Tursa 2013-4-15
编辑：James Tursa 2013-4-15
[m n] = min(M(:));
[x y z] = ind2sub(size(M),n);
x, y, z will be the indexes (i.e., argmin) of the minimum value of your 3D array M.
  2 个评论
Jan
Jan 2013-4-16
The documentation of min explains this exhaustively already. Type this in Matlab's command window:
help min
doc min
and read it.

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更多回答（3 个）

Cedric
Cedric 2013-4-15
How do you define argmin? If it is the global min, you can get it as follows:
min(M(:))
where M is your 3D array.
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Sreeda M A
Sreeda M A 2016-7-13
can you please explain what values should I give for M ??

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Sean de Wolski
Sean de Wolski 2013-4-15
Or:
min(min(min(M)))
  2 个评论
Ties Hendrickx
Ties Hendrickx 2019-4-29
Nope, this will return the minimum value and not the index of the minimum value
Cedric
Cedric 2019-4-30
Just use [~,linIdx] = min(M(:)) and then convert to subscripts using IND2SUB.

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Steven Lord
Steven Lord 2019-4-30
If you're using release R2019a or later, you probably want to call min with the 'all' dimension input and the 'linear' flag.

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