This is what we did with all our imagery received. We wrote a process to
transform everything into 4326 as a standard base. If someone needs the
imagery in another projection, that is the one off that we let GeoServer
transform on the fly.
If you have a need to supply as rule multiple projections, then you can pre-run
the transformations and expose through different workspaces/datastore/layer
etc. that is specific to the required projection. This of course causes
storage requirements to swell dramatically.
Chris Snider
Senior Software Engineer
Intelligent Software Solutions, A Polaris Alpha Company
[Description: Description: Description: cid:[email protected]]
From: Jason Newmoyer [mailto:[email protected]]
Sent: Friday, September 22, 2017 9:19 AM
To: Lonnie Matsuno <[email protected]>; GeoServer Mailing List List
<[email protected]>
Subject: Re: [Geoserver-users] WMS Response times Web Mercator vs WGS84
Most likely I'd say the only optimization is to transform your mosaic into the
most-used SRS.
Jason Newmoyer
Newmoyer Geospatial Solutions
843.606.0424
[email protected]<mailto:[email protected]>
On Thu, Sep 21, 2017 at 12:34 PM, Lonnie Matsuno
<[email protected]<mailto:[email protected]>> wrote:
Hello users,
We were running some WMS performance tests against our image mosaic raster
layers and found that performance was significantly slower (almost 40%) when
our SRS was Web Mercator (EPSG:3857) compared to WGS84 (EPSG:4326).
Our source data is in NAD83 (2011) UTM. There are more transformation
operations going from say EPSG:6341 to EPSG:3857 than EPSG:6341 to EPSG:4326,
so I suspect that accounts for the slowness.
My question: is there any suggestions to reduce the response difference?
Thanks.
Lonnie
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