Create a data dictionary named 'dataDict.sldd' in the base workspace, and then create an Embedded Coder Dictionary in the data dictionary. In the base workspace, represent the Embedded Coder Dictionary by using the coder.Dictionary object myCoderDictObj.

Simulink.data.dictionary.create('dataDict.sldd');
myCoderDictObj = coder.dictionary.create('dataDict.sldd');

Check if the Embedded Coder Dictionary is empty. When you created the Embedded Coder Dictionary, definitions from the Simulink package were loaded into it, so the dictionary is initially not empty.

empty(myCoderDictObj)

ans =

  logical

   0

Remove the Embedded Coder Dictionary from the data dictionary and again check to see if it is empty.

coder.dictionary.remove('dataDict.sldd');
empty(myCoderDictObj)

ans =

  logical

   1