Andrea,
Thanks for the pointer.
Chris Snider
Senior Software Engineer
Intelligent Software Solutions, A Polaris Alpha Company
[Description: Description: Description: cid:[email protected]]
From: [email protected] [mailto:[email protected]] On Behalf Of Andrea
Aime
Sent: Wednesday, March 15, 2017 3:10 AM
To: Chris Snider <[email protected]>
Cc: '[email protected]',
([email protected]) <[email protected]>
Subject: Re: [Geoserver-users] Feature Data Reader Query Zoom level
Hi Chris,
during a WMS request the GetMap machinery sets some environment variables that
you can pick, using the env function,
to know the scale denominator:
http://docs.geoserver.org/stable/en/user/styling/sld/extensions/substitution.html#predefined-variables
There is no such a thing as a "zoom level" in WMS, but if you really need that
number you can probably
compare the scale denominator with a table of values to get the closest
matching z value
Cheers
Andrea
On Wed, Mar 8, 2017 at 9:27 PM, Chris Snider
<[email protected]<mailto:[email protected]>> wrote:
Hi,
I was wondering if there is a way to determine the zoom level of a WMS call
against a content feature reader? For example, if a query is passed into a
feature data source/reader, is it possible to tell based on the FastBBOX filter
what the current zoom/scale of the request is?
I ask because I’d like to create a dynamic data store/feature source that
generates lines/polygons specific to the bounds that are being requested via
WMS adding higher density of geometries the closer to the ground the request
is. Is this possible?
Chris Snider
Senior Software Engineer
Intelligent Software Solutions, A Polaris Alpha Company
[Description: Description: Description: cid:[email protected]]
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