There is great code by István Zachar , but I do not know how to use it. I have saved the code as a .m file and use file->install to install it. However, when I call the package the error message below occurred. May you so kind to give me some reference of how the package to be created and install from scratch. I really want to write some useful package by myself.
Needs::nocont: Context ExploreGraphics` was not created when Needs was evaluated.