[OpenLayers-Users] Finding out available resolutions for tilecache

[Adrian Popa]

Thank you kindly,

I will try it :)

Pierre Giraud wrote:
> Hi Adrian,
>
> Here's a code snippet that should help you find the resolutions of
> your map. You can copy/paste/run it in the firebug's (multi-line)
> console.
>
>   var resolutions = [];
>   for (var i = 0; i <= map.numZoomLevels; i++) {
>     resolutions.push(map.getResolutionForZoom(i));
>   }
>   console.log(resolutions.join(','));
>
> I hope this will help you.
>
> On Thu, Oct 15, 2009 at 2:47 PM, Adrian Popa
> <adrian_gh.popa at romtelecom.ro> wrote:
>   
>> Hello everyone,
>>
>> I'm trying to convert my WMS layer to use tilecache in the backend and I have stumbled over this problem which I can't solve yet:
>>
>> Here is my request:
>> http://terra/cgi-bin/tilecache.cgi?MAP=%2Fvar%2Fwww%2Fhtml%2Fmap%2Frtc_base.map&TRANSPARENT=false&FORMAT=image%2Fpng2&MAP_IMAGETYPE=agg&TRANSITIONEFFECT=resize&LAYERS=rtc_base&MAXEXTENT=left-bottom%3D(20.26%2C43.16)%20right-top%3D(29.7%2C48.46)&MAXRESOLUTION=156543&UNITS=m&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&EXCEPTIONS=application%2Fvnd.ogc.se_inimage&SRS=EPSG%3A900913&BBOX=-180,-90,180,270&WIDTH=256&HEIGHT=256
>>
>> Here is the response of the server:
>>
>> An error occurred: can't find resolution index for 1.406250. Available resolutions are:
>> [156543.03390000001, 78271.516950000005, 39135.758475000002, 19567.879237500001, 9783.9396187500006, 4891.9698093750003, 2445.9849046875001, 1222.9924523437501, 611.49622617187504, 305.74811308593752, 152.87405654296876, 76.43702827148438, 38.21851413574219, 19.109257067871095, 9.5546285339355475, 4.7773142669677737, 2.3886571334838869, 1.1943285667419434]
>>
>> I've read over the internet and it seems I need to set the same 'resolutions' array in OpenLayers and in TileCache. No problem.
>> My question is: what is my "current" OpenLayers resolution? How can I find it?
>>
>> Currently, my map has no special options set (about resolutions or zoom levels).
>>
>> I've looked around the DOM, but the properties there only reflect what I set up at the map/layer creation.
>>
>> Thanks.
>> Adrian
>>
>>
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>> http://openlayers.org/mailman/listinfo/users
>>
>>     
>
>
>
> --
> Pierre GIRAUD
> G�omaticien, Analyste
>
> Camptocamp France SAS
> Savoie Technolac, BP 352
> 73377 Le Bourget du Lac, Cedex
>
> Tel : 00 33 4 79 44 44 93
> Mail : pierre.giraud at camptocamp.com
> http://www.camptocamp.com
>
>   


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