[mapguide-users] Image download size

[Kenneth Skovhede, GEOGRAF A/S]

I have applications that does this, using OpenLayers.
Simply create two MapGuide layers, and set the bottom one to use JPG 
compression.
Fusion 2.0 should be able to support something like this (not sure if 
1.1 does?)
The drawback is that you get two server calls, but it is still faster, 
even on fast lines.

Regards, Kenneth Skovhede, GEOGRAF A/S



Gary Morin skrev:
>
> Hi
>
>  
>
> We currently have an issue with MapGuide with the size of Image 
> download when viewing Aerial images or detailed raster maps, we are 
> finding the average PNG download is 2 -- 3 mb, this makes for very 
> slow web client when working over the internet.
>
>  
>
> We know you can change the image format and have tested JPG and PNG8, 
> but the image degradation is to great, I'm not sure how much the 
> proposed ticket http://trac.osgeo.org/mapguide/ticket/465 will help 
> with this.
>
>  
>
> We have experimented in using Base maps, but we really do not want 
> fixed zoom scales.
>
>  
>
> So I wondered about a compromise, where the vector data is downloaded 
> as PNG and image data is downloaded as compressed format, similar to 
> using Base Maps but without the tilling,  the PNG is then overlaid on 
> the raster image. Does this makes sense?, would it be feasible for the 
> a future development? The idea is you zoom and pan as normal for a non 
> tiled map.
>
>  
>
> Any comments?
>
>  
>
> Gary
>
>  
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> mapguide-users mailing list
> mapguide-users at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/mapguide-users
>   
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/mapguide-users/attachments/20090311/9f907b4e/attachment.html