Create a matrix whose diagonal elements are determined by a control

[Dirichlet123]

Hi,

How can I create a diagonal matrix whose diagonal elements are determined by a control?

Like  [ lamda 0; 0 lamda]

Thanks in advance.

Chuan

[mtwar]

Hi!

Have you tried Set Matrix Diagonal function? It's in Mathematics -> Linear Algebra -> Matrix Palette

Marcin

[Bob_Schor]

What have you tried, and why isn't it working?  Attach your code (meaning the VI itself) so we can see, try it, and advise you.

Some points to consider:

• LabVIEW allows you to have N-dimension Arrays, including 2-D n-by-n Arrays.
• LabVIEW also now allows a separate "Matrix" type.
• There are structures such as the For Loop that work well when programmatically indexing through Arrays.
• There are functions that "do certain things" for Arrays and Matrices.

Presumably you are using either Arrays or Matrices, and are using one or more LabVIEW Structures or Functions.  If you show us your code, we can make suggestions ...

Bob Schor

[Dirichlet123]

Thanks for your advice. I use the 'create special Matrix.vi' to create a n-by-n identity matrix and I want this matrix to multiply a scalar, lamda. I don't know how to implement this.

Chuan

[mtwar · Accepted solution]

You can just use Multiply function 🙂