Vector and Matrix Index Operator

The index operator [ ] returns elements of a matrix or a vector with [n] entries.

The numbering of the indices of an array is a zero-based numbering. Means the 1st entry of an array object is returned at .

The operation x[i] returns the (i + 1)-th component of the input object x. i is the number of the index of the vector

Example:

ID	Description	Type	Value	Expression
x		REAL VECTOR		[0,1,2]
i		REAL	0	0
z	Result	REAL	0	x[i]

The operation returns the matrix element of the (i + 1)-th row on the (j + 1)-th column of the matrix x.

The index of the rows is defined within and for the columns

Example:

ID	Description	Type	Value	Expression
x	Argument	REAL MATRIX		[[1,2],[3,4],[5,6]]
i	Argument	REAL	0	0
j	Argument	REAL	1	1
z	Result	REAL	2	x[i,j]

The operation x[i,] returns the (i+1)-th row the matrix, xy-data or signal x.

Example:

ID	Description	Type	Value	Expression
x	Argument	REAL MATRIX		[[1,2],[3,4],[5,6]]
i	Argument	REAL	0	0
z	Result	REAL VECTOR		x[i,]

The operation x[,j] returns the (j+1)-th row the matrix, xy-data or signal x.

Example:

ID	Description	Type	Value	Expression
x	Argument	REAL MATRIX		[[1,2],[3,4],[5,6]]
i	Argument	REAL	1	1
z	Result	REAL VECTOR		x[,i]