Hallo,
Thank you very much. I didn't even think of the trivial solution. As of now, I will only provide WMS that serves current image. Should there be further requirements, you've already provided me with several tricks. Thanks!
Regards,
Theresia
________________________________
From: "pcreso@anonymised.com" <pcreso@anonymised.com>
To: theresia freska <frezzz_54@anonymised.com>
Sent: Tue, December 8, 2009 9:08:07 PM
Subject: Re: [GeoNetwork-users] Near real time WMS data using geoserver
Hi,
I need more information about exactly what you want to do.
You have incoming geotiffs you want to make available via WMS.
Do you want to replace previous images with the latest version so you only ever have one "current" image served via WMS?
Do you want to keep all old images?
and if so, do you also want to make those available via WMS?
Do you want each image recorded as an entry in Geonetwork?
The first is trivial, as you just need to set up one WMS service with one underlying geotiff, then copy each incoming file to overwrite the previous one. The server will always sereve that image. So the image changes but the filename doesn't.
The second I think is problematic. You can finish up with a huge number of layers in your WMS capabilities document which is not realistic.
Automatically cataloging the images in Geonetwork is feasible, but may take some work. There are a few approaches possible:
1. Have the WMS service populate the metadata fields & harvest them automatically with Geoserver
2. Have a custom app write the new data directly into the underlying geoserver db.
3. Have a custom web service use CWS to write the entry to Geonetwork.
Cheers,
Brent
--- On Wed, 12/9/09, theresia freska <frezzz_54@anonymised.com> wrote:
From: theresia freska <frezzz_54@anonymised.com>
Subject: Re: [GeoNetwork-users] Near real time WMS data using geoserver
To: pcreso@anonymised.com
Cc: geonetwork-users@lists.sourceforge.net
Date: Wednesday, December 9, 2009, 7:55 AM
Hallo,Thank you for your reply. I'm sorry I forgot to mention
that I'm using geoserver that is included in
geonetwork.So, basically I'm using the default package of
geonetwork+geoserver+intermap to set up a mini SDI
application that will provide WMS/WCS which is able to
serve near real time raster data. I will get the data from a
ground receiving station, most likely in geotiff format.
This raster data will also be stored in a raster database
called Rasdaman. And here's the same question again. How
can I set up this kind of WMS?Thank you.
From:
"pcreso@anonymised.com" <pcreso@anonymised.com>
To: theresia
freska <frezzz_54@anonymised.com>
Cc:
geonetwork-users@lists.sourceforge.net
Sent: Tue,
December 8, 2009 4:32:26 PM
Subject: Re:
[GeoNetwork-users] Near real time WMS data using geoserverHi Theresia,
I'm not sure the geonetwork list is the best place to
ask this, the geoserver & mapserver lists might be more
relevant, but here is one possibility.I have approached this sort of issue (using Mapserver
rather than Geoserver - but it should apply much the same).In my context the example data are vessel tracks &
positions.I have a WMS/WFS server set up with UMN mapserver. This
serves data extracted from a PostGIS database via an SQL
query which defines the layer content.The incoming position data is loaded automatically into
PostGIS (both as a set of point data and a current day
trackline), so any query returns whatever data is
current/available. A query/view on the table of locations
returns the latest point for each vessel, so I have a
virtual table of current positions.If the client refreshes the map every 30 seconds or so, and
just views the current_positions layer, they effectively
have a vessel tracking application. Or they can add the
daily tracklines for a history going back however many days
they want.I'm not sure how well this approach fits your needs,
but it works well for mineHTH,
Brent Wood
--- On Wed, 12/9/09, theresia freska <frezzz_54@anonymised.com>
wrote:> From: theresia freska <frezzz_54@anonymised.com>
> Subject: [GeoNetwork-users] Near real time WMS data
using geoserver
> To: geonetwork-users@lists.sourceforge.net
> Date: Wednesday, December 9, 2009, 3:50 AM
> Hi all,
>
> I want to set up a WMS which is able to serve near
real
> time data. I've been
searching through various sites and
> couldn't find any hint. Is it possible to do this
using
> Geoserver? Because all this time, I was just
uploading
> geotiff file and publishing it as a service. And
that's
> static data. Any input is highly appreciated.
>
> Thank you.
>
>
>
>
>
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