Hi Jukka
I know it's rather unusual, but I think that providing feature info on huge
floating point raster dataset is a task that Geoserver is optimized to handle.
I do need however to avoid that Geoserver performs the retrieval of data, since
requesting a getMap for a bounding box containing ex. 200GB data, would take
close to forever to create a response. That is why I would like to skip the
data retrieval and just send back a blank transparent image.
If I use security and deny getMap requests, wouldn't the requester get an error
in return? I would like a response corresponding to no-data-to-be-found-here.
Regards, Casper
From: Rahkonen Jukka (MML) [mailto:jukka.rahko...@maanmittauslaitos.fi]
Sent: 10. august 2016 14:25
To: Casper Børgesen (CABO); geoserver-users@lists.sourceforge.net
Subject: Re: Always return blank image on getMap requests?
Hi,
Rather unusual use case for WMS really. Some ideas:
- Add a huge white opaque watermark
- Make a layer group with white layer on the top
- Use security and deny GetMaps but allow GetFeatureInfo
-Jukka Rahkonen-
Lähettäjä: Casper Børgesen (CABO) [mailto:c...@niras.dk]
Lähetetty: 10. elokuuta 2016 14:58
Vastaanottaja:
geoserver-users@lists.sourceforge.net<mailto:geoserver-users@lists.sourceforge.net>
Aihe: [Geoserver-users] Always return blank image on getMap requests?
Hi
I am trying to use Geoserver to host +100GB's of floating point raster data as
a WMS layer. I would like to use the layer for getFeatureInfo lookups but I
would like to just return a blank image on any getMap requests to the layer -
no matter what the getMap request asks for.
I have tried to create a raster style with opacity set to 0.0, but it seems
like Geoserver still fetches the data. I guess the raster style is evaluated
after the requested data has been retrieved?
Can I configure a WMS layer to respond with a blank image on every getMap
request?
Regards, Casper
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