One approach to validate the size of the ColumnNames option is to use a custom validation function. This validation function can take both the InputMatrix and the ColumnNames option as inputs and check whether the size of the ColumnNames matches the width of the InputMatrix. Here's an example implementation:
function [out] = somefun(InputMatrix, options)
arguments
InputMatrix (:,:) % size NxN where N!=0
option.ColumnNames {validateColumnNames(InputMatrix,option.ColumnNames)} % validate using custom function
end
% rest of the function
out = [];
end
function validateColumnNames(InputMatrix, ColumnNames)
% custom validation function to check size of ColumnNames
if ~isempty(ColumnNames) && size(ColumnNames, 2) ~= size(InputMatrix, 2)
error('ColumnNames must have the same width as the input matrix.')
end
end
In this implementation, the ColumnNames option is validated using the validateColumnNames function which takes both the InputMatrix and ColumnNames as inputs. This function checks whether the size of the ColumnNames matches the width of the InputMatrix. If it doesn't, an error is thrown.
Note that the validateColumnNames function is defined within the same file as the somefun function, which makes it accessible only within that file. If you need to use the same validation function across multiple files, you can define it in a separate file and add it to the MATLAB path.
