Simulink Dimensions of signal change - help

hi,

i have a very strange problem. If i disconnect some 'ToWorkspace' block from my System the dimensions seems to change. But not the weirdest. See here:

you can see before the sum block that the dimensions changed.

Can anybody help?

Greetings

[TAB]

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Answer 1

[Kaustubha Govind]

Not sure which dimensions have changed. Are you talking about the difference in the signal dimensions for the outputs of the two Matrix Multiple blocks? The calculated output dimensions seem fine to me, because the second input to each block have different dimensions (first block gets a 2-D signal of 2x1, second block gets a 1-D signal of length=2).

[Alex]

Right after the first Matrix Multiple the output is [2x1] but the first input into the Sum is just "1". And i dont understand how that can change...

[Kaustubha Govind]

Ah! Sorry, didn't notice that before. Do you see any error? I tried constructing something similar, but don't see this issue.