Create a MantidMatrix object from the named workspace.
- Args:
- name: The name of the workspace.
firstIndex: The workspace index to start at (default: the first one).
lastIndex: The workspace index to stop at (default: the last one).
showDialog: Whether to bring up a dialog to allow options to be entered manually (default: no).
visible: Whether to initially show the created matrix (default: no).
- Returns:
- A handle to the created matrix.