Download data dictionary programmatically

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Hi, I would like to download data dictionary linkied to a simulink model programmatically and save it in a preferred location. Can anyone let me knoe how its done?

回答(1 个)

Rahul
Rahul 2024-9-3
Hi Harish,
I understand you are unable to programmatically download the data dictionary associated to a Simulink model and save it to a preferred location locally.
You can use the Simulink API to interact with the model and its associated data dictionary. Here’s a possible solution to the issue you’re facing:
Steps to Download and Save a Data Dictionary:
  • Open the Simulink Model: Ensure that your Simulink model is open or load it programmatically.
  • Access the Data Dictionary: Use the 'get_params' function to find and access the data dictionary linked to the model.
  • Save the Data Dictionary: Save the data dictionary to your preferred location.
Here's an example script to illustrate these steps:
% Load Simulink Model
modelName = 'your_model_name';
load_system(modelName);
% Get the data dictionary associated with the model
ddInfo = get_param(modelName, 'DataDictionary');
% Check if the model uses a data dictionary
if ~isempty(ddInfo)
% Open the data dictionary
ddObj = Simulink.data.dictionary.open(ddInfo);
% Specify the path where you want to save the data dictionary
savePath = 'C:\path\to\your\preferred\location\your_data_dictionary.sldd';
% Save the data dictionary and close the object
saveAs(ddObj, savePath);
close(ddObj);
disp(['Data dictionary saved to: ', savePath]);
else
disp('The model does not use a data dictionary.');
end
close_system(modelName, 0);
  • Model Name: Replace 'your_model_name' with the actual name of your Simulink model.
  • Save Path: Specify the full path where you want to save the data dictionary, replacing 'C:\path\to\your\preferred\location\your_data_dictionary.sldd'.
For more information regarding programmatically extracting model parameters, refer to the documentation below:
  5 个评论
Rahul
Rahul 2024-9-4
Preferrably, an assignment operation before saving changes, would suffice:
newDataDict = ddObj;
Harish
Harish 2024-9-4
编辑:Harish 2024-9-4
Hi Rahul,
I tried both, unfortunately it is not reflecting on the original file. The variable newDataDict is assigned the new values inside the workspace as expected, but it is not being reflected on the file newly created.

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