Well, thanks for the nudge. I decided to start clean so I could give you as
simple an example as possible, which made me realize I was actually testing on
a WMS layer to avoid loading too much data. With a clean start I had to trouble
getting a vector layer working as desired with maxResolution = 10.
However I am still unable to get the WMS layer to do the same or similar. I
don't need this as much as I'd like to understand, it, so here is my WMS layer
code
var wmsLayer = new OpenLayers.Layer.WMS(
"WMS Layer", "/geoserver/wms",
{
layers: 'streets',
maxResolution: 10,
styles: '',
srs: 'EPSG:4326',
format: 'image/png',
tiled: 'true',
tilesOrigin : map.maxExtent.left + ',' +
map.maxExtent.bottom,
transparent: true
},
{
buffer: 0,
'opacity': 0.75, 'isBaseLayer': false, 'wrapDateLine': true
}
);
Looking at the layer in firebug it does not have the maxResolution I set, and
resolutions ranges from 1.40625 to 0.00004291534423828125. I tried a middle of
the road value 0.02197265625 as both max and min resolution with no effect.
Thanks,
charles
----- Original Message -----
From: "Eric Lemoine" <[email protected]>
To: "Charles Galpin" <[email protected]>
Cc: [email protected]
Sent: Wednesday, November 3, 2010 8:34:06 AM GMT -05:00 US/Canada Eastern
Subject: Re: [OpenLayers-Users] ZoomLevels again
On Wed, Nov 3, 2010 at 1:20 PM, Charles Galpin <[email protected]> wrote:
> I know this has been discussed before and I have read the SettingZoomLevels
> wiki page several times but I still cant figure out how to control the
> display of my vector layer by zoom level. I must be missing something pretty
> basic.
>
> In short, all I want to do is wait until a certain zoom level before enabling
> the layer so it doesn't query the server before then and get too many
> features. For example using google maps as the base layer, map.getZoom()
> returns 14 and map.getResolution() returns 9.554 around about where I'd like
> it to start displaying but any combination of minScale, maxScale,
> minResolution, maxResolution, minZoomLevel, maxZoomLevel I try on my layer
> does not seem to have any effect. I've tried 1/the number, and overly large
> and small values to try see what affects it, but none do anything.
>
> I know I can control this with SLD in geoserver, but I'd like to control this
> from openlayers. Does anyone have a simple example that shows this working?
Hi. Setting minResolution and/or maxResolution in the vector layer
options should work. For further help could you please provide an
example where it doesn't?
--
Eric Lemoine
Camptocamp France SAS
Savoie Technolac, BP 352
73377 Le Bourget du Lac, Cedex
Tel : 00 33 4 79 44 44 96
Mail : [email protected]
http://www.camptocamp.com
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