[vtk-developers] Parallel coordinates chart looking nice

Marcus D. Hanwell marcus.hanwell at kitware.com
Mon Apr 5 17:02:53 EDT 2010

Hi Eric,

Just to let you know I have bidirectional selections working in ParaView,
the one wrinkle is that the vtkAnnotationLink is not invoking its changed
event. You could listen to the chart's selection changed event, and I will
talk to Jeff about integrating it better with the vtkAnnotationLink API.

I have tested it in ParaView with a line chart, spread sheet, 3D view (line
probe) and the parallel coordinate view. It is working quite well, but there
are still a few bugs I need to track down. It requires more selection modes
too, as well as better interaction with axes etc.


On Mon, Apr 5, 2010 at 12:39 PM, Eric E. Monson <emonson at cs.duke.edu> wrote:

> Hey Marcus,
> That sounds great. If you could give me a heads-up when you commit the
> bi-directional selections I'd really appreciate it.
> Talk to you later,
> -Eric
> On Apr 5, 2010, at 11:53 AM, Marcus D. Hanwell wrote:
> Hi Eric,
> On Mon, Apr 5, 2010 at 11:45 AM, Eric E. Monson <emonson at cs.duke.edu>wrote:
>> Hey Marcus,
>> It looks like you're making some good progress on this, and I see that it
>> shows up as a view in ParaView now, too!
>> I don't want to be bugging you about it, but it looks like so far the
>> AnnotationLink stuff is built in so that outside links will be reflected in
>> the parallel coordinates chart, but selections made within the parallel
>> coordinates chart do not update the internal annotation link selection list
>> (and do not fire AnnotationChangedEvent). Is this something that you plan to
>> add soon? (Or, am I misreading the code as it stands?)
> Don't worry about bugging me, you are reading the code correctly. I have
> some local changes where I am working on getting the selections back out and
> into ParaView. I have not got the last part working (into ParaView), but
> hope to have something I can commit very soon.
>> Again, I don't want to be bugging you, but I am curious whether I should
>> spend time trying to plug this into my personal copy since I need it for my
>> own use, or if you'll be addressing it soon in the main repository?
> I am working on this right now. I will let you know once I have committed
> something that should work, it would be great to have feedback on this final
> part once it is in. Then I will have some rendering issues to work out, but
> selection should work in and out.
> Thanks,
> Marcus
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