sub2ind — matrix subscript values to linear index
I = sub2ind(dims,i1,i2,...) J = sub2ind(dims,Mi)
vector: the matrix dimensions
the subscript value arrays(same matrix shape as
I
)
matrix whose columns contains the subscript values.
the linear index array
sub2ind
is used to determine the equivalent
single index corresponding to a given set of subscript values. I
= sub2ind(dims,i1,i2,..)
returns the linear index equivalent to
the row, column, ... subscripts in the arrays i1
,
i2
,.. for an matrix of size dims
. In
this case i1
, i2
,.. must have the
same shape and the result I
has the same matrix shape.
I = sub2ind(dims,Mi)
returns the linear index
equivalent to the subscripts in the columns of the matrix
Mi
for a matrix of size dims
. in
this case I
is a column vector.