Constant block doesn't accept array

Not sure why the constant block doesn;t give the output as array. Is there any to make it possible?

Answer 1

[Paul]

What is the value of A in the base workspace? Or whatever workspace it lives in.

Note that “A” in the From and GoTo blocks has nothing to do with A in the Constant block.

[madhan ravi]

there is no value in base workspace for A

[madhan ravi]

Yes , I am aware of it, is there a way possible to use the output in the constant block? It has to take place within the SIMULINK file/model

[Paul]

In the model in the Question, what is the entry for the "Constant value" in the block parameters for the constant block that's feeding Display 1? It looks like it should be 'A', and A must be a variable defined in the base workspace or model workspace (or a mask workspace if that block is masked), and the value of A is 1. That output of 1 is coming from somewhere. But maybe this discussion isn't really relevant to what you want to do.

Do you want the constant block with 'A' to take on the value 2:3 when the simulation is running? If so, why is that second constant block needed at all. Just route the output of the 2:3 block to wherever it needs to go.

Answer 2

[Jim Riggs]

Yes, you can save the value to the workspace and reference it in a constant block. As @Paul points out, the label on the Goto block has nothing to do with the workspace variable name.

The "To Workspace" block saves the variable in structure "Out", and has several options for the variable format.

Below, I show a reference to variable "B" saved to the workspace as an array and as a Time Series. This option is selected in the properties of the "To Workspace" block.

Answer 3

[Abderrahim. B]

Hi!

I understood that you want the output of the constant block to have the same size as the array in it.

Use the constant block from DSP System Toolbox/ Sources.

Hope this helps

[madhan ravi]

I don't have license for it

[Abderrahim. B]

One more option is to deselect Interpret vector parameters as 1-D. Open the block dialog box, in the tab Main you will find this.

[madhan ravi]

tried it, and I reckon the results are the same

[Abderrahim. B]

Tried at my end.. multiplied the generated const array with its transpose and it worked just fine. What kind of calculations you re doing?

[madhan ravi]