Cannot delete text added to scatter plot points (2024)

I was going to add the following comment, but it is superfluous in the light of relativity of simultaneity ... :-)

@Matt, @dpb - I wonder if you make the figure current via

it should be able to delete the object.

Whether the figure is in focus or not makes no difference; the handle refers to the object directly without reliance on any other hierarchy.

I don't follow at all why OP would think there's even any possibility he can delete the object using its handle if he doesn't pass that handle to a new scope (the second button's callback function that tries to do the dirty).

"... 1 pushbutton that adds points ... then another ... that remove[s] points...I shouldn't have to pass the legend1 text handle from one button to the other since I just want to delete it ..."

How is the delete button to know what to delete and get access to it if it doesn't have the handle? Of course you have to pass it (or have access to it by some other method such as (ugly) making it global).

ADDENDUM

OK, there is a way other than passing; use findobj or similar technique in the "delete" callback routine to uncover the handle of the desired text object. This'll entail having some way to ascertain "who's who in the zoo" of all the possible text entities that may be present to make sure it's the right one (like keeping a tag or somesuch).

But, however you do it, you must somehow have the handle associated with the specific text object you wish to remove in the context of the function doing the deleting. That you make it in some other function is immaterial once you leave that function you're operating in a new scope and any and everything that was defined inside that function is gone when you leave unless it was made persistent or you passed it back out as a return value or made it global (again, Ugly!) or whatever...