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