[mapguide-users] Tiling engine question

[Kori Maleski]

George,

The Tiling Engine will grab 1 extra row and column on either side if the
stating and ending row columns are not specified.

The row and column count are determined directly by the bounds of the map
definition as set in Studio, at the smallest scale.  Every subsequent zoom
threshold is tiled based on the initial map width.

There is no way to evaluate whether a tile has no content before generating
it, so the only way of reducing tiles is to manually delete them.  You could
delete all files 2kb and under.  For PNGs files this size are blank and/or
single colour tiles.  You will most likely delete some valid files in this
manner.


Cheers,

________________________________




Kori Maleski
Senior Application Developer
WEBSOFT DEVELOPERS, INC.
P: (530) 759-8754 ext 114
F: (530) 759-0923
kori.maleski at websoftdev.com
________________________________

 

-----Original Message-----
From: mapguide-users-bounces at lists.osgeo.org
[mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of George McLean
Sent: Wednesday, December 05, 2007 9:53 AM
To: MapGuide Users Mail List
Subject: Re: [mapguide-users] Tiling engine question

Thanks Kori, I am looking forward to any suggestions you might have.

George

Kori Maleski wrote:
> Hi George,
>
> I have the TilingEngine by default grab 1 or 2 extra rows and columns
> outside the perimeter of the defined map extents.  This is incase the
> browser/screen resolution is sized in such a way upon initial map load to
> include any outside area.
>
> I will give you an update tomorrow on specifics and how to possibly
minimize
> this.
>
> Cheers,
>
> Kori Maleski
>
> -----Original Message-----
> From: mapguide-users-bounces at lists.osgeo.org
> [mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of George McLean
> Sent: December 4, 2007 5:46 PM
> To: MapGuide Users Mail List
> Subject: [mapguide-users] Tiling engine question
>
> I am using the Websoft Developers tiling engine to create tiles that may 
> be used outside of mapguide. I noticed that there are many blank tiles 
> created that appear outside of the border of my map. I have seen this 
> running a php script I wrote to create tiles as well. I am trying to 
> understand how the tiling function in mapguide determines where the edge 
> of the map is. Is it somehow related to the Initial View settings in the 
> Map Definition in Studio? Is related to the farthest zoom scale? I am 
> trying to minimize the number of blank tiles created. Any suggestions?
>
> Thanks
>
> George McLean
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>
>   

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