Extractor
This block extracts entries of the input matrix for the construction of new output matrices. The indices of the entries of the input matrix and the shapes of output matrices are specified by the block parameters. Any entry of the input matrix may be used any number of times, or not all.
Library
Activate/Routing
Description
This block extracts entries of the input matrix for the construction of new output matrices. The indices of the entries of the input matrix and the shapes of output matrices are specified by the block parameters. Any entry of the input matrix may be used any number of times, or not all. The indices should be represented as a scalar or a matrix, and the dimension of extracted data is the same as indices used as block parameters. When an input signal is a matrix rather than a vector, it is indexed in the column major way. For example, the input signal is a matrix [1 2 3;4 5 6;7 8 9], to extract the entries by indices [4 3 2 1], the extracted vector is [2 7 4 1]
Parameters
| Name | Label | Description | Data Type | Valid Values |
|---|---|---|---|---|
nout | Number of outputs | Specify the number of output signals to be extracted. | Number | |
extractor | Extractor Index | Specify the entries to be extracted by indices, it could be a scalar or a matrix, same indices are allowed in a matrix. | Structure | |
extractor/index | Index | Cell of matrices | ||
externalActivation | External activation | Specifies whether the block receives an external activation or inherits its activation through its regular input ports. When External Activation is selected, an additional activation port is added to the block. By default, external activation is not selected. | Number | 0 |
Ports
| Name | Type | Description | IO Type | Number |
|---|---|---|---|---|
Port 1 | explicit | output | nout | |
Port 2 | explicit | input | 1 | |
Port 3 | activation | input | externalActivation |
Advanced Properties
| Name | Value | Description |
|---|---|---|
always active | no | |
direct-feedthrough | yes | |
zero-crossing | no | |
mode | no | |
continuous-time state | no | |
discrete-time state | no |