Hi, Fadi. As Ian recently defined it, Deducer is a "general purpose"
GUI. Your request is a very specific problem, and it is unlikely that
other people need exactly that thing, so it's logical that you don't
find that feature in Deducer dialogs.
Of course, it's an open source extensible GUI as well, so you can
modify the dialogs for your specific purposes, if you are willing to
take the trouble. Anyway, for this case my advice is do it throug
code. When you create a plot in the Plot Builder, you can copy the
code of the plot you are creating, or save the object created by
ggplot. You can use that code or the saved object in your custom
function, that also gets the specified directory, the dimensions you
want, etc.
But how to implement that function is a general R-question, that has
little or nothing to do with Deducer.
Regards,
Helios