[Tilecache] Quick panning with overlays

[Eric Lemoine]

Hi Yves. The MapFish layer tree can show your WMS and MapServer
layers' sublayers. Each sublayer has a checkbox, so for a given WMS or
MapServer layer with multiple sublayers, you can set any combination
of sublayers in your layer - the layer tree relies on mergeNewParams.

Eric

2008/11/26, Yves Moisan <yves.moisan at boreal-is.com>:
> Yep.  I just found it.  I can lump 5 or 6 small line shapefiles into one
> WMS layer, but the problem now is the layerswitcher.
>
> Thanx,
>
> Yves
>
> Le mercredi 26 novembre 2008 à 13:49 -0500, Alexandre Dube a écrit :
>> Yves,
>>
>> You can "group" your layers directly in OpenLayers without to do
>> anything in your mapfile.
>>
>> See below for an example :
>> - Layer.MapServer layers names must separated by spaces " "
>> - Layer.WMS layers names must be separated by comma ","
>>
>> Hope this helps,
>>
>> Alexandre
>>
>> olBDGA = new OpenLayers.Layer.MapServer(
>> "BDGA map",
>> szMSURL,
>> {
>> map: szBDGAMapPath,
>> layers: "BDGA_HABIT_S_POLY BDGA_MRC_S_POLY_1M "+
>> "BDGA_REGIO_S_POLY_1M "+
>> "BDGA_ROUTE_L_ARC BDGA_ROUTE_L_ARC_ANNO "+
>> "BDGA_HABIT_P_POINT",
>> map_imagetype: "aggtrans"
>> },
>> {
>> isBaseLayer: false,
>> singleTile: true
>> }
>> )
>>
>>
>>
>> Yves Moisan wrote:
>> >> I think 20 overlays is .. a lot.  especially from a dynamic WMS - must
>> >> take a while to render, forget panning!  Instead of grouping them in
>> >> OpenLayers (which would still mean 20 OL layers), can you group them
>> >> in the WMS -- that helps with things like labeling as well..
>> >>
>> >
>> > Hey Josh,
>> >
>> > Indeed I have 20 some odd overlays and 3 base layers.  Those 3 layers
>> > are Google hybrid, a blank 1 X 1 gif to act as no base layer and an
>> > Ikonos image which I've massaged with gdal as per
>> > http://ms.gis.umn.edu/docs/howto/raster_data ch. 10 and which I
>> > eventually used TC on mod_python for.  None of the overlays are
>> > Tilecached because they're a bunch of very small shapefiles.  Grouping
>> > in the WMS means that I need to tweak my mapfile right ?  I tried
>> > looking for examples on the MapServer site and didn't find anything.  Or
>> > is that grouping done elsewhere ?
>> >
>> >
>> >> As for caching, I assume something like TileCache was meant.  I think
>> >> I actually saw a patch to tilecache recently that lets you do a form
>> >> of 'cascaded wms' (eg merging of wms layers) in tilecache itself for
>> >> that matter...
>> >>
>> >
>> > I guess that applies for TileCached layers only, which isn't my case.
>> >
>> > Thanx !
>> >
>> > Yves
>> >
>> > _______________________________________________
>> > Tilecache mailing list
>> > Tilecache at openlayers.org
>> > http://openlayers.org/mailman/listinfo/tilecache
>> >
>>
>>
>
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