Returns the rows of x with the numbers which are stored in i. This function is defined for matrices and signals. If x is a signal the row 0 is the abscissae vector, row 1 is the first ordinate, and so on.
Syntax
extract(x,i)
Types
Variable Name | Value Type | Variable Type | ||
---|---|---|---|---|
Arguments: | x | real, complex | matrix, signal, xy-data | |
i | real | scalar, vector | ||
Result: | v | real, complex | vector, matrix |
Calculator Input
Use the
button to complete the operation.Examples
ID | Description | Type | Value | Expression | |
---|---|---|---|---|---|
x | REAL MATRIX |
| [[2,3,4],[3,4,5]] | ||
i | REAL | 1 | 1 | ||
v | Result | REAL VECTOR |
| extract(x,i) |
ID | Description | Type | Value | Expression | |
---|---|---|---|---|---|
x | REAL SIGNAL | signal([1,2,3],[2,3,4],[3,4,5]) | |||
i | REAL VECTOR |
| [0,1] | ||
A | Result | REAL MATRIX |
| extract(x,i) |