Building a GUI around cranvas

[sebble]

Two short questions:

Is there any expectation for cranvas to be embedded in a ggraphics()
element of gWidgetsQt?

Is it currently possible to either select multiple individual points
on a scatterplot, or what is the best way to get notification of a
selection change (possibly via callback)?

[Michael Lawrence]

On Mon, Jul 4, 2011 at 3:19 AM, sebble <sebble.com@googlemail.com> wrote:

Two short questions:

Is there any expectation for cranvas to be embedded in a ggraphics()
element of gWidgetsQt?

No, ggraphics() is an R graphics device; cranvas is not compatible with that. We're working on an abstraction for interactive graphics that parallels the gWidgets abstraction for GUIs. Hopefully the two could interoperate at some level.
 

[sebble]

On Jul 5, 2:37 pm, Michael Lawrence <lawrence.mich...@gene.com> wrote:

> On Mon, Jul 4, 2011 at 3:19 AM, sebble <sebble....@googlemail.com> wrote:
> > Two short questions:
>
> > Is there any expectation for cranvas to be embedded in a ggraphics()
> > element of gWidgetsQt?
>
> No, ggraphics() is an R graphics device; cranvas is not compatible with
> that. We're working on an abstraction for interactive graphics that
> parallels the gWidgets abstraction for GUIs. Hopefully the two could
> interoperate at some level.

That sounds great, I realise what I just asked now, clearly cranvas
isn't a graphics device, do you think it would be difficult to embed
cranvas plots into a GUI created with gWidgets in their current
states, would a significant amount of work be needed to unwrap the
qtpaint layers from the window you are using and embed it into a the
gWidgetsQt framework as a new widget?

>
>
>
>
>
>
>
> > Is it currently possible to either select multiple individual points
> > on a scatterplot, or


> > what is the best way to get notification of a
> > selection change (possibly via callback)?

Any thoughts on this anyone?

[Michael Lawrence]

On Tue, Jul 5, 2011 at 6:49 AM, sebble <sebble.com@googlemail.com> wrote:

On Jul 5, 2:37 pm, Michael Lawrence <lawrence.mich...@gene.com> wrote:

> On Mon, Jul 4, 2011 at 3:19 AM, sebble <sebble....@googlemail.com> wrote:
> > Two short questions:
>
> > Is there any expectation for cranvas to be embedded in a ggraphics()
> > element of gWidgetsQt?
>
> No, ggraphics() is an R graphics device; cranvas is not compatible with
> that. We're working on an abstraction for interactive graphics that
> parallels the gWidgets abstraction for GUIs. Hopefully the two could
> interoperate at some level.

That sounds great, I realise what I just asked now, clearly cranvas
isn't a graphics device, do you think it would be difficult to embed
cranvas plots into a GUI created with gWidgets in their current
states, would a significant amount of work be needed to unwrap the
qtpaint layers from the window you are using and embed it into a the
gWidgetsQt framework as a new widget?

>

The PlotView object is already a QWidget. Presumably it would be pretty easy to feed this to gWidgetsQt. That's a better question for John though.

Michael

 

[Sebastian Mellor]

Thanks for your help,

I asked John about this on SO
http://stackoverflow.com/questions/6669719/can-i-embed-cranvas-interactive-graphics-into-gwidgets-gwidgetsqt-in-r
and he was very helpful, he has modified gWidgetsQt to allow embedding
a cranvas plot within a gWidgets GUI.

Regards,
Seb

On Jul 5, 3:13 pm, Michael Lawrence <lawrence.mich...@gene.com> wrote: