Hi im trying to find the indexs of the minimum in a 4-D "matrix" but the usual command:

[Minimum,Index]=min(Expression,[],'all') does not work.

(here "Expression" is my function of 4 variables )

The error message tells me : Error using min

Specify 'linear' option when returning two outputs and the dimension is 'all' or a vector.

But when i specify the linear option it returns me the index 11755218 and i don't understand what it means ?

Note: the ndgrid of my function is :[phi1,phi2,phi3,phi4]=ndgrid(0:0.1:2*pi,0:0.1:2*pi,0:0.1:2*pi,0:0.1:2*pi);

Thx to the great saouls who can help me.

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