Extract non zero term from Vector

Hello, I have a 1 x 9 vector which contains all zeroes apart from one element which will take a +ve or -ve number, it's index will change, how do i extract this non zero number in Simulink? Is there a block for it?

Answer 1

[Guillaume]

A quick search for "simulink nonzeros" returns as its first link this find block. If you set the Show output port for nonzero input values to true, then you'll get the nonzeros values.

[Zhenteng Shen]

This gives the index but not the value I think

[Guillaume]

As I wrote:

If you set the Show output port for nonzero input values to true, then you'll get the nonzeros values.

Answer 2

[KL]

nonzeros - EDITED

Use it in a Matlab function block?

[Guillaume]

The correct matlab function to get the non zero values is nonzeros. nnz just return how many non-zeros elements there are.

[KL]

So fast. Just about when it hit me and came back here to edit :D

[Zhenteng Shen]

I really want to do it on Simulink, and I actually want the value of the non zero number. Thanks

[KL]

You really can do this in Simulink. Check

https://www.mathworks.com/help/simulink/ug/creating-an-example-model-that-uses-a-matlab-function-block.html

[Zhenteng Shen]

No I mean, I want to use it with only simulink library components

Answer 3

[Omur Bas]

If all the other elements are zero, and you don't need the index, then Sum of Elements block would do the trick.