Simulink subtraction of consecutive rows from a matrix

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Gazi Taspinar
Gazi Taspinar 2021-4-7
回答： Michael Savitz 2021-8-6
Hello everybody,
I have a problem with substracting of consecutive rows from a matrix. I have a matrix R whose dimension is Nx3 where N is inputted by user. For example;
If N=2;
I have 2x3 matrix. My intention is to find R(2,3)-R(1,3).
I tried to use vector index inside a for loop but I got error about dimensions. I get following error.
My simulink model is as follows:
Could anyone help me please?

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回答（1 个）

Michael Savitz
Michael Savitz 2021-8-6
Hi Gazi,
It appears that your model is using the Index Vector block to select rows of the matrix R. The Index Vector block does not support matrix inputs. See https://www.mathworks.com/help/simulink/slref/indexvector.html.
Instead, you may want to use the Selector block. See https://www.mathworks.com/help/simulink/slref/selector.html.
Hope this helps,
Michael

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