Splitting Vector Elements in Simulink

Please Help.

Error : Invalid Setting for input port dimensions Demux

How am I suppose to split the elements of a 2D Vector into individual signals. The output vector contains two elements.I tried several methods but am unable to fix the problem.

I don't understand why even after using a Demux for splitting the elements both output elements are routed through a single signal as shown in the Image.

Answer 1

[Sebastian Castro]

Try using a Selector block instead, from the same library as the Demux block.

This should support multi-dimensional arrays and, in general, gives you more control than Demux blocks.

- Sebastian

Answer 2

[Revathi Vegi]

Hello,

Please help me in solving this.

I have a column matrix(3*1) which is the output obtained from some matrix operations. I want to use these column matrix elements as seperate inputs(go to blocks) for another one. How to get these matrix elements seperately?

when I tried using demux the output dimensions are (3*1) same as input which I cant use as input for other one. Also I tried using selector block but i didnt understand how this selector block will help me in seperating the column matrix elements.

Also i tried matlab function block next to the column matrix in order to use 'matsplit' command to split the matrix elements. But i am getting error as invalid command. I am using R2017b version for my work.

Please suggest me.

Thankyou in advance:)

[Walter Roberson]

matsplit is not part of MATLAB itself. It is https://www.mathworks.com/matlabcentral/fileexchange/48439-matsplit

[khalid ELhoubri]

Hello Revathi Vegi ,I have got some situation (3 * 1 signal), can you please share with the solve this issue

Thank you in advance

[Walter Roberson]

@khalid ELhoubri

https://www.mathworks.com/help/simulink/slref/demux.html

Use three output ports on the demux; each one will get one if the input values.