Read the help for max. What are the outputs?
help max
MAX Maximum elements of an array.
M = MAX(X) is the largest element in the vector X. If X is a matrix, M
is a row vector containing the maximum element from each column. For
N-D arrays, MAX(X) operates along the first non-singleton dimension.
When X is complex, the maximum is computed using the magnitude
MAX(ABS(X)). In the case of equal magnitude elements the phase angle
MAX(ANGLE(X)) is used.
[M,I] = MAX(X) also returns the indices corresponding to the maximum
values. The values in I index into the dimension of X that is being
operated on. If X contains more than one element with the maximum
value, then the index of the first one is returned.
C = MAX(X,Y) returns an array with the largest elements taken from X or
Y. X and Y must have compatible sizes. In the simplest cases, they can
be the same size or one can be a scalar. Two inputs have compatible
sizes if, for every dimension, the dimension sizes of the inputs are
either the same or one of them is 1.
M = MAX(X,[],'all') returns the largest element of X.
[M,I] = MAX(X,[],'all') also returns the linear index into X that
corresponds to the maximum value over all elements in X.
M = MAX(X,[],DIM) or [M,I] = MAX(X,[],DIM) operates along the
dimension DIM.
M = MAX(X,[],VECDIM) operates on the dimensions specified in the vector
VECDIM. For example, MAX(X,[],[1 2]) operates on the elements contained
in the first and second dimensions of X.
C = MAX(X,Y,NANFLAG) or M = MAX(X,[],...,NANFLAG) or
[M,I] = MAX(X,[],NANFLAG) or [M,I] = MAX(X,[],DIM,NANFLAG) specifies
how NaN (Not-A-Number) values are treated. NANFLAG can be:
'omitnan' - (default) Ignores all NaN values and returns the maximum
of the non-NaN elements. If all elements are NaN, then
the first one is returned.
'includenan' - Returns NaN if there is any NaN value. The index points
to the first NaN element.
[M,I] = MAX(X,[],...,'linear') returns the linear index into X that
corresponds to the maximum value in X.
C = MAX(...,"ComparisonMethod",METHOD) specifies how to compare input
values. The value of METHOD must be:
'auto' - (default) Compares real numbers according to 'real', and
complex numbers according to 'abs'.
'real' - Compares according to REAL(A). Elements with equal real
parts are then sorted by IMAG(A).
'abs' - Compares according to ABS(A). Elements with equal
magnitudes are then sorted by ANGLE(A).
Example:
X = [2 8 4; 7 3 9]
max(X,[],1)
max(X,[],2)
max(X,5)
See also MIN, BOUNDS, CUMMAX, MEDIAN, MEAN, SORT, MAXK, ISLOCALMAX.
Documentation for max
doc max
Other functions named max
categorical/max dlarray/max gpuArray/max tall/max
codistributed/max duration/max sym/max timeseries/max
datetime/max fints/max
Do you see the SECOND output argument from max? That tells you where the maximum occurs, at which index.
Use that returned argument to index into your other vector.
