topic Re: Deleting display boxes in Discussions

Deleting display boxes

matteo_patelmo — Sat, 14 Jan 2017 07:56:01 GMT

Hello,

following suggestions from txnelson from a previous post, I'm creating a few display boxes without showing them in a window, in order to extract the informations I need with not visualizations for the user. I am not sure, though, if I need to delete these display boxes explicitly or if some garbage collection is active to delete them at some time.

If I do need to delete them, is boxName<<delete box the correct way?

thanks

Matteo

Re: Deleting display boxes

txnelson — Sat, 14 Jan 2017 12:43:16 GMT

Any object created takes up memory, if it is visible or not. So it is wise to clean up any created objects. Here is what I do for both visible and invisible platforms.

Names Default To Here( 1 );
dt = Open( "$SAMPLE_DATA/big class.jmp" ,private);
vlb = V List Box( biv = dt << bivariate( x( :height ), y( :weight ) ) );

biv << close window;

Re: Deleting display boxes

matteo_patelmo — Sat, 14 Jan 2017 13:01:55 GMT

Thanks. Could you please explain what to do with vlb in your example? is this display box taking up memory as well? I suppose it gets closed automatically with the << close window message, but it's not very clear how this happens.

What about an empty V List Box created but not shown in any window, like:

vlb=V List Box();

Should it be deleted? how?

Re: Deleting display boxes

txnelson — Sat, 14 Jan 2017 13:36:49 GMT

vlb can be deleted, but it is a very small object by its self.

vlb<<delete;