Shift current workspace to workspace of caller, while in debug mode
This function allows you to examine the calling MATLAB® code file to determine what caused the arguments to be passed to the called function.
Multiple dbup functions change the workspace context to each previous calling file on the stack until the base workspace context is reached. (It is not necessary, however, to move back to the current breakpoint to continue execution or to step to the next line.)
If your receive an error message such as the following, it means that the parent workspace is under construction so that the value of x is unavailable:
??? Reference to a called function result under construction x