[mapserver-users] Show tiles only in current extent

[Christopher Schmidt]

On Tue, Sep 08, 2009 at 05:21:34PM -0500, Steve Lime wrote:
> You're using OpenLayers? If so then that's a question for that mailing list I guess. There are configuration
> options to limit the number of tiles retrieved. I believe it's a 'ratio' parameter passed when instantiating a
> layer and if set to 1 you don't get anything beyond the view port.

ratio: Untiled, set to 1 for untiled image which is the same size as viewport
buffer: Tiled, set to 0 for minimal number of tile loads.

-- Chris

> Steve
> 
> >>> On 9/8/2009 at 12:08 PM, in message <1252429728233-3604671.post at n2.nabble.com>,
> luciosoto <luciosoto at hotmail.com> wrote:
> 
> > Hello everyone, i need your valuable help with this issue I have:
> > 
> > I'm running MapServer 4.8.1 over Apache 2.2.1 in Windows, and also TileCache
> > 2.1 using mod_python, everything is great so far, but i want to improve the
> > performance when displaying the maps by only showing the tiles in the
> > current extent, let me explain: I've noticed that when I zoom in the
> > mapserver in some way (that I'm too stupid to find out) takes the
> > coordinates and starts sending the request to get the tiles one by one, i
> > see that sometimes it downloads up to 70 tiles when looking at the screen no
> > more than 20 would be neccesary to fill the screen, so that is the question,
> > how do i make mapserver to show me just the necessary stuff instead of
> > downloading tiles that are close to the visible area but are not necessary
> > anyway?
> > 
> > Thank a lot.
> 
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-- 
Christopher Schmidt
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