Re: [Geoserver-users] Imagemosaic spanning the dateline

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That is encouraging. Trying it if I can figure the REST. While there is no accounting for some random consumer might request, any sensible query isn’t going to ask for the raster in anything but 3857 and it would make no sense outside SW Pacific.

From: Andrea Aime <and...@ge...>
Sent: Sunday, 28 October 2018 05:59
To: Phil Scadden <P.S...@gn...>
Cc: GeoServer Mailing List List <geo...@li...>
Subject: Re: [Geoserver-users] Imagemosaic spanning the dateline

Hi Phil,
we have done that in the past, even with granules spanning the dateline, using a heterogeneous CRS
setup (each image in its own UTM zone, the ones crossing the dateline in UTM 1 or 60).
That said, it's always tricky, so I won't promise it will work in your case.

Having the source CRS in 3857, that will surely be source of troubles if someone asks the map in output
in 4326, last time I stumbled in that case if the client asked for the entire globe to be displayed in 4326
the envelope reprojection would fail

Cheers
Andrea

On Fri, Oct 26, 2018 at 2:35 AM Phil Scadden <P.S...@gn...<mailto:P.S...@gn...>> wrote:
Before I waste a lot of time on something impossible, I thought I would ask whether it is okay to have an image mosaic that crosses the dateline. None of the granules cross the 180 (more accurately, the data is split into tiles that don’t cross the 180), but the mosaic itself will span a big hunk of the SW Pacific. CRS is 3857 for each tile. The reason I ask is the LL, UR coordinates for an envelope2d would violate the common assumption that LL x is < LR x that flat-earthers are so used to.

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