Error: When loading a matrix input, the blocks loading the corresponding data columns of the matrix must specify dimension using a scalar

Question

Timo 2023-2-10

回答： Fangjun Jiang 2023-2-10

I use MATLAB to create a variable weights. This variable is 11x216 in size.

I have a Simulink Inport, which expects an input matrix of 11x216.

I save the variable weights alongside other variables in a *.mat file.

Then, I use the Inport functionality of Simulink to import that *.mat file and use the Map Mode "Port Order" to input the data into my model.

However, I get the warning:

> When loading a matrix input, the blocks loading the corresponding data columns of the matrix must specify dimension using a scalar

This makes no sense to me.

How to specify a matrix (2D!) with one scalar?
Okay, they mean each data column. But how exactly do I specify the dimension of that data column? The inports do not provide such a functionality.

Can anyone help me here? I dont know what this error means. My variable type/dimensions match up with the input dimensions of that port.

Answer 1

Fangjun Jiang 2023-2-10

In R2022b, open this doc and see the example model.

To import 2D data, there is a specific format which should be the same regardless from .mat file or from workspace.

web(fullfile(docroot, 'simulink/slref/read-2d-signals-in-structure-format-from-workspace.html'))