The sizes of the input matrices are incompatible

[Josetv]

yes sorry, here are the VIs in various earlier versions..

[GerdW]

Hi Jose,

this is what I transform your VI into:

(The sequence frames are just to bundle their content to mimic your previous MATLAB nodes.)

Right now your VI is missing some data, see the comments. There also is no wait in your loop, so the VI will burn (atleast) one CPU core.

[Josetv]

Hi GerdW

Thanks for replying. I'll check the option you are giving to solve this. But the main problem is this:

I input a 2x1 vector (xk1) from outside of the mathscript node and the matrix-vector product is done inside the node (A(2x2)*xk1(2x1)), then it outputs the result xk (2x1 vector). How to perform that operation?    

[Josetv]

Oops. I'm so ashamed, totally forgot to add the dimension right in the input, as the image shows in the red box.