[OpenLayers-Users] question about overlays

[Adam Eskreis]

very interesting...does anyone have any resources/tutorials for me to get
started with this stuff?

On 4/10/07, bradleyspencer <brad at cubewerx.com.au> wrote:
>
>  Adam,
>
>
>
> Have you thought about creating the thematic overlays interactively using
> SLDs?
>
>
>
> See http://www.cubewerx.com.au/DemoDrapes.html
>
>
>
> Cheers,
>
>
>
> *Brad Spencer***
>
> General Manager
>
> CubeWerx Australia Pty Ltd
>
> ABN: 37 115 163 285
>
> Mob: +61 (0)404 841 131
>
> Tel/Fax: +61 (0)2 9481 7024
>
> mailto:brad at cubewerx.com.au
>
> http://www.cubewerx.com.au
>
>
>
> -----Original Message-----
> *From:* Adam Eskreis [mailto:aeskreis at gmail.com]
> *Sent:* Wednesday, 11 April 2007 10:24 AM
> *To:* users at openlayers.org
> *Subject:* [OpenLayers-Users] question about overlays
>
>
>
> I am currently constructing a map with many thematic layers.  For those
> that don't know, a thematic layer is a layer which color codes certain
> polygons based on a certain field, such as population density or something
> like that.  I want these thematic layers to be able to be turned on and
> off.  I have each thematic layer set up as a seperate group in the mapfile,
> and i set up each one as a seperate overlay in openlayers.  However, my
> problem is now i have around 40 overlays on my OpenLayers map.  Is this too
> many?  It is taking a long time to load the map now.  So my question, is
> having a lot of overlays bad practice?  If so, how can i cut down on
> overlays, but still be able to have each thematic layer be able to be shown
> on demand by the user? Thanks.
>
> -Adam
>
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