How to export a column vector from a "MATLAB Function" block without seeing the “Cannot Save Outputs in the ‘Array’ Format” error?
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I have a Simulink model which contains a "MATLAB Function" block. The "MATLAB Function" block code outputs a column vector of values.
However, when trying to output these values using an "Outport" block, I see the error message below:
Cannot save outputs in the 'Array' format because signals connected to the root outports of model 'MyModel' are not scalar or 1-D arrays. Set 'Configuration Parameters > Data Import/Export > Format' to 'Dataset', 'Structure' or 'Structure with time'.
How can I resolve this error to export a column vector from my "MATLAB Function" block?
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MathWorks Support Team
2026-4-4
0 个投票
MATLAB interprets a column vector as a matrix of size [N x 1] while Simulink interprets a column vector as a 1-D array containing N values.
Therefore, to resolve the issue, you may either:
- Go into the "MATLAB Function" block's code under the "FUNCTION" tab, then select "Edit Data". Select the output variable which is causing the error in the right-hand side tab and in the code. Open the "Advanced" drop-down menu and check the option to "Interpret output column vectors as one-dimensional data".
- Use a "Reshape" block with the "Output Dimensionality" parameter set to "1-D array" to define the [Nx1] matrix as a 1-D array.
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