[mapguide-users] Tiling and other methods to improve performance

[George McLean]

Thanks again Kori. I will be upgrading today and hopefully will see 
beautiful panning maps!

George


Kori Maleski wrote:
> George,
>
> Upgrade to 1.2, since the tiled maping/base layer performance is much
> better.
>
>
> Then use the tiling engine to pre-tile just the area of interest at large
> scales.  Small scales you may tile the whole thing.
>
> This will reduce the number of tiles significantly.
>
>
> The tiling engine allows you to specify a bounding box in tile row/columns.
> If you specify these bounds you can limit the tile generation to required
> areas only.  This will have to be done for each zoom threshold - easily done
> with a batch script.
>
> I generated a tiled base map for the entire state of California in this
> manner.  I tiled the entirety of all the small scale thresholds and then
> just specific areas of interest (urban centres) at large scale thresholds.
>
> To reduce tiles (and the amount of space they require) - try to reduce the
> number of thresholds.  Some may be unnecessary.
>
>
> 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, September 19, 2007 3:32 PM
> To: MapGuide Users Mail List
> Subject: [mapguide-users] Tiling and other methods to improve performance
>
> Hello,
>
> I have a large base map that covers an area for an electric utility. The 
> base map is in state plane grid coordinates and the map is about 100 
> miles in both X and Y. Most of this map in this 100x100 region is blank 
> since we only have base information near where the utility's facilities 
> are located. I am trying to improve performance by using tiles. I would 
> like to have zoom levels in pretty close, maybe on the order of 1:500 as 
> well as zoom levels that much farther out. If I set this up with Base 
> Layers in studio and then generate tiles using Websoft's tiling engine 
> for each zoom level, I will get a huge number of tiles. If I do not 
> generate tiles then performance is perceived as poor.
>
> Are there any better strategies for dealing with large base maps that 
> must be viewed both at the detail level and high zoom scales? I m still 
> using MGOS 1.1 (maybe I should upgrade).
>
> Thanks,
>
> George McLean
>
>
>
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