visualpython-users

[Visualpython-users] clear the gdots object

[<jam...@fd...>]

Hi.

Please, is there any body working on a native C method to clean the gdots 
object ?

I am currently doing:

for dot funct3.dots:
    dot.visible=False

 funct3.dots=[]


but this is very  time consuming for many dots.

Is there a native C way or a built in way of doing this ?

thanks.
============================================
Jose Antonio Martin H.
Departamento de Sistemas Informáticos y Computación
Facultad de Informática
Universidad Complutense de Madrid
Ciudad universitaria, 28040 Madrid
============================================

Re: [Visualpython-users] clear the gdots object

[Bruce S. <Bru...@nc...>]

In Visual 3 which you're using, it was necessary to implement gdots=20
using a list of label statements, which was very slow, and the only way=20
to get rid of the dots is to do what you did.

In the beta Visual 4 (see vpython.org > Recent developments), gdots is=20
implemented as a single "points" object, and you can get rid of all the=20
dots by saying simply "mygdots.dots.pos =3D []" (assuming your gdots name=
=20
was "mygdots").

Bruce Sherwood

Jos=E9 Antonio Mart=EDn H wrote:
> Hi.
>
> Please, is there any body working on a native C method to clean the gdo=
ts=20
> object ?
>
> I am currently doing:
>
> for dot funct3.dots:
>     dot.visible=3DFalse
>
>  funct3.dots=3D[]
>
>
> but this is very  time consuming for many dots.
>
> Is there a native C way or a built in way of doing this ?
>
> thanks.
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> Jose Antonio Martin H.
> Departamento de Sistemas Inform=E1ticos y Computaci=F3n
> Facultad de Inform=E1tica
> Universidad Complutense de Madrid
> Ciudad universitaria, 28040 Madrid
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>
>
> -----------------------------------------------------------------------=
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> Vis...@li...
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>  =20

Re: [Visualpython-users] clear the graph object

[<jam...@fd...>]

Hi, by the way what happends with this code ?
that is, is the memory freed after each initialization ?

self.Gtrajectory = gcurve(gdisplay=self.clwindow,color=color.yellow)

do some plot operation on  self.Gtrajectory


self.Gtrajectory.gcurve.visible = False
del self.Gtrajectory
self.Gtrajectory = gcurve(gdisplay=self.clwindow,color=color.yellow)


This code cleans the graphic object gcurve but i am not sure that the memory 
is freed

It this code cleaning the memory too ?

Is there any other way of cleaning a gcurve object ?

Kind regards.
jose

============================================
Jose Antonio Martin H.
Departamento de Sistemas Informáticos y Computación
Facultad de Informática
Universidad Complutense de Madrid
Ciudad universitaria, 28040 Madrid
============================================

Re: [Visualpython-users] clear the graph object

[Bruce S. <Bru...@nc...>]

That should free up memory eventually, when Python does garbage=20
collection. Python keeps a reference count on all objects (and Visual=20
adds another one if the object is visible, because the human user=20
constitutes another reference to the object, which is why you have to=20
make the object invisible before deleting it). When the reference count=20
goes to zero, Python can delete the data from memory., At least that's=20
the way it's SUPPOSED to work.

Bruce

Jos=E9 Antonio Mart=EDn H wrote:
> Hi, by the way what happends with this code ?
> that is, is the memory freed after each initialization ?
>
> self.Gtrajectory =3D gcurve(gdisplay=3Dself.clwindow,color=3Dcolor.yell=
ow)
>
> do some plot operation on  self.Gtrajectory
>
>
> self.Gtrajectory.gcurve.visible =3D False
> del self.Gtrajectory
> self.Gtrajectory =3D gcurve(gdisplay=3Dself.clwindow,color=3Dcolor.yell=
ow)
>
>
> This code cleans the graphic object gcurve but i am not sure that the=20
> memory is freed
>
> It this code cleaning the memory too ?
>
> Is there any other way of cleaning a gcurve object ?
>
> Kind regards.
> jose
>
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> Jose Antonio Martin H.
> Departamento de Sistemas Inform=E1ticos y Computaci=F3n
> Facultad de Inform=E1tica
> Universidad Complutense de Madrid
> Ciudad universitaria, 28040 Madrid
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>