[R] problem with grid animation

[Paul Murrell]

Hi


Zepu Zhang wrote:
> I'm trying to do animation with grid. Basically it's a vector field, like what 'quiver' 
> in Matlab creates. I need to update it with grid.edit(). It seems grid erases the 
> whole thing first, then redraws. Therefore the evident 'flash' between frames.


Correct.


> Any way to avoid this flash? Thanks.


There are a couple of ways, but unfortunately they may not be to your 
taste ...

1)  Use windows (where double-buffering has been implemented)
2)  Find some way to convince someone to modify the X11 device (or 
whichever device you are using) to support double-buffering
3)  Provide a patch for the X11 device yourself ...

Paul
-- 
Dr Paul Murrell
Department of Statistics
The University of Auckland
Private Bag 92019
Auckland
New Zealand
64 9 3737599 x85392
paul at stat.auckland.ac.nz
http://www.stat.auckland.ac.nz/~paul/