[ka-Map-users] kaMap.js setTile routine being invoked many more times then I expect?

[Samuel Doyle]

Thanks,

So using force option in tile.php is not going to work in this situation. Any other way to have mapserver force the tile to be redrawn per refresh_interval then? I mean if and only if the tile has changed? From the init.php it looks as if you use the redraw_interval option and have tilesource set to redraw should do it but it doesnt appear to work. I mean I can manually copy over a new version of a dbf file and verify that the file timestamp has changed but whenever the refresh takes place it isn't updated. I manually need to remove the tiles to have them redrawn again. Any ideas?

Thanks, S.D.

Paul Spencer <pspencer at dmsolutions.ca> wrote: Samuel,

setTile is called once for each tile on each layer.  Depending on  
your tile size and viewport size, you could have as many as 20-30  
tiles per layer.  The minimum number of tiles per layer would be 9 (3  
wide and 3 high) but typically ends up being larger.  Don't forget  
that there are some tiles off screen.  For instance, if your viewport  
is 600 x 600 pixels and your tiles are 200x200, you will likely end  
up with 5 or 6 tiles wide and 5 or 6 tiles high, thus 25-36 tiles per  
layer.

Cheers

Paul

On 28-Jul-06, at 8:47 PM, Samuel Doyle wrote:

> Hi,
>
> I was doing some debugging related to the performance of passing  
> the force option to tile.php and noticed that this setTile routine  
> was being invoked many more times then I expect. I mean I have only  
> three layers added to my map file that I want to have the force  
> redraw option applied to but it appears that these layers are being  
> set many more times over. Can someone explain what is happening here?
>
> Thanks, S.D.
> _______________________________________________
> ka-Map-users mailing list
> ka-Map-users at lists.maptools.org
> http://lists.maptools.org/mailman/listinfo/ka-map-users

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|Paul Spencer                           pspencer at dmsolutions.ca   |
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|Applications & Software Development                              |
|DM Solutions Group Inc                 http://www.dmsolutions.ca/|
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