Structure in simulink and Embedded MATLAB Function

Hi everyone.

I'm trying prove a example of Mathworks about structure in Simulink , You can find It in the help of Matlab "Example of Structures in an Embedded MATLAB Function Block".

I do this exercise how you can look at the picture bellow( click on link bellow)

http://img221.imageshack.us/img221/1628/probestructdoneid.png

In that case , it work , but when I change "a2" with a matrix for example [2 3;4 6] and I changed the code too, look at the picture (click on link bellow)

Diagrama simulink: http://img819.imageshack.us/img819/8711/probestructdone.png

Code Embedded Matlab: http://img714.imageshack.us/img714/8711/probestructdone.png

in that case it doesn't work , appears a error window :

http://img338.imageshack.us/img338/8711/probestructdone.png

I attached the files of program simulink and buses: https://sourceforge.net/projects/simustruct/files/SimulnkStructure.rar/download

I hope You can help me

Answer 1

[Kaustubha Govind]

Are you working with the demo model named 'emldemo_bus_struct'? If yes, what version are you using? I'm asking because in R2011b, it appears that the model already uses a 2x2 matrix for that last element of the bus. In any case, it seems like you may not have updated the Simulink.Bus in the base workspace to also use a 2x2 matrix. You need to look at the "Output Data Type" setting in the dialog of the Bus Selector that the bottom two Constant blocks are connected to. You will see a Simulink.Bus object with the same object. If it's called SubBus:

>> busEls = SubBus.Elements;
>> busEls(2)

ans =

Simulink.BusElement
              Name: 'a2'
        Complexity: 'real'
        Dimensions: [2 2]
          DataType: 'int8'
               Min: []
               Max: []
    DimensionsMode: 'Fixed'
      SamplingMode: 'Sample based'
        SampleTime: -1

See that the "Dimensions" field says "[2 2]".

Answer 2

[Julio]

Thank you for answer me ... I didn't use the demo , simply I created a new model (a copy) , you are right the problem is the dimension field , I dont knowed it , I though that it was automatic ... Now it work very good, thank you very much :).

[Kaustubha Govind]

Julio: Could you please accept my answer if your question is resolved? Thanks!

[Julio]

Sorry , I forgot It.

Thank again .