[OpenLayers-Users] Problems with svn head

[Christopher Schmidt]

On Thu, Apr 19, 2007 at 07:12:59PM -0400, Stephen Woodbridge wrote:
> Christopher,
> 
> Great job! Updated svn and made the change you suggested and it works 
> great. Thanks. I also think this fixed the memory leak I was seeing. 
> Memory still grows with navigation but if I kill the browser window and 
> wait for a little bit the memory will drop back down to a reasonable level.
> 
> I have a new problem :( to report. While I am navigating about zooming, 
> panning, etc. I get random pink tiles. I have been able to determine 
> that these are caused by what appears to be a truncated image. If I use 
> FF Tools -> Page Info -> Media and scroll through the images, some of 
> the tiles have not loaded fully. I can copy the url to another window 
> and do a Shift-Reload on the tile and new good copy is put in the cache. 
> Then zoom out - Zoom in will reload the tiles and it will look good. 
> This is easy to reproduce.

I've seen this a couple times: it seems that loading lots of images
quickly makes the browser (I'm assuming you're using Firefox) kinda
choke.

However, there's a fix:

"By default, OL would only try once. If a user wanted to try multiple
image requests before going pink, they would set
OpenLayers.IMAGE_RELOAD_ATTEMPTS = 3 (or something similar)."

 -- http://trac.openlayers.org/ticket/447

So, before setCenter, do:

 OpenLayers.IMAGE_RELOAD_ATTEMPTS = 3;

And the pink tiles will try to reload. 

Regards,
-- 
Christopher Schmidt
MetaCarta