MATLAB Function to .NET Application Using MATLAB Data API for .NET with complex data structures (OrderedDi​ctionary<D​ateTime, double[]> <=> timetables)

How would the below example:

https://uk.mathworks.com/help/compiler_sdk/dotnet/deploy-mlcode-in-dotnetapp-using-ml-data-api-for-dotnet.html

such as:

A) pass a c# OrderedDictionary<date, double[]> to a matlab function (among other parameters, such as doubles & strings) and

B) Convert/Get that dictionary as a timetable in Matlab, on which operations to be made in the matlab function,

C) While returning a double[] array back into the .NET application?

The above usecase would be more useful as a started into a more complex environment involving timetables and c# dictionaries.

Answer 1

[Swastik Sarkar]

Hi @Andy,

Below is an example of how to pass a .NET Dictionary to a MATLAB function. For more information, refer to the following documentation:

https://www.mathworks.com/help/matlab/matlab_external/use-matlab-dictionary-objects-in-net.html#mw_c5600be1-62c2-498b-8cad-bb3d4c7677ab

Additional guidance on passing dictionaries to MATLAB can be found in the documentation here::

https://www.mathworks.com/help/matlab/matlab_external/pass-data-to-matlab-from-net.html#mw_2f219392-54c3-4c19-b60a-e3bd0639d394

It is important to note that the Date type may not be supported directly. Instead, consider representing dates as strings, as shown below:

d = '2024-10-24'

d = '2024-10-24'

dO = datetime(d)

dO = datetime
   24-Oct-2024

To convert the dictionary to a timetable, use the following approach:

timetable(datetime(dict.keys), dict.values(:,1), dict.values(:,2) ... )

Hope this is helpful !