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]
On Thu, Sep 21, 2017 at 12:34 PM, Lonnie Matsuno <[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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