[OpenLayers-Users] Reloading broken tiles?

[Erik Uzureau]

On 7/8/07, Gregor Mosheh <gregor at hostgis.com> wrote:
> Christopher Schmidt wrote:
> > OpenLayers only sets the 'src' attribute of an image tag -- nothing
> > more. When images don't load, they don't load because the browser
> > decided not to load them -- I have no idea why this happens. The
> > IMAGE_RELOAD_ATTEMPTS is the only way I know of to fix this, and I have
> > no idea why this wouldn't work.
>
> Yeah; even Google Maps does this now and then. No sweat, but I do have
> some other applications for such functionality.
>
> Does there exist a method that orders OpenLayers to refresh the current
> map view, re-download all tiles for the current viewport, or for a
> specific layer?

If you are using trunk, there is now a function "redraw()" on Layer
that should work to redraw layers, but there is not a map.redraw().
What you would do is call map.setCenter() and passing "true" for the
"zoomChanged" flag.

If people think a map.redraw() function would be helpful, please let
me know and I can add that.

e



>
> A real-world use comes to mind when using dynamic data, e.g. having
> added a new point to a database via some PHP script, I'd like to redraw
> the WMS layer without my reloading the entire page and losing my place.
> I don't see documentation of a .redraw() method, for example, on the
> Layer or Map objects, so I take it the answer is No here?
>
> --
> Gregor Mosheh / Greg Allensworth
> System Administrator, HostGIS cartographic development & hosting services
> http://www.HostGIS.com/
>
> "Remember that no one cares if you can back up,
>   only if you can restore." - AMANDA
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