MATLAB actually has different workspaces! The main workspace is called the base workspace, but every function also has its own private workspace: this is done on purpose to keep the internal details of how functions work separate from each other and from the base workspace too.
If you want to see the variables in a function workspace, then you have two main ways to achieve this:
- return some variables (i.e. output arguments) from a function to another workspace.
- use the debugging tools to view inside any workspace.
This is explained in the documentation too: "By default, the Workspace browser displays the base workspace. You also can view function workspaces if MATLAB is in debug mode. For more information, see Debugging Process and Features..."
It is not recommended to magically pass all variables to another workspace via assignin, evalin or something similar. This is buggy and slow. MATLAB themselves describe the best practices for passing variables around between workspaces.
