Hi Aaron - with netCDF files I’ve used a postGIS store to index the data and 
then create an imagemosaic store.

I’ve been meaning to test a very large mosaic - which needs some care to build 
[1]. My process is described after Daniele’s comments - it works fine for a few 
hundred tiles but not for many thousands with interesting reference systems :)

But in short, yes, and with netCDF, and with a world file for each (although 
Geoserver will create it’s own indexing parts - so the data directory needs to 
be writable by tomcat. We link files from our RO filesystem into someplace on 
the geoserver host to enable this)

Cheers

Adam

[1] https://sourceforge.net/p/geoserver/mailman/message/35736574/


--
Dr. Adam Steer
Earth systems data service specialist
National Computational Infrastructure
Leonard Huxley Building, Mills Road
The Australian National University
Acton ACT 2600 Australia

adam.st...@anu.edu.au
+61 2 6125 1413
http://nci.org.au



> On 7 Apr 2017, at 12:44 am, Jason Newmoyer <ja...@newmoyergeospatial.com> 
> wrote:
> 
> As long as the tiles have geographic metadata (world file, geotiff, etc) then 
> ImageMosaic will automatically index them with a shapefile. You just point 
> the new store to the directory containing all of the tiles when creating it. 
> 
> 
> Jason Newmoyer
> Newmoyer Geospatial Solutions
> 843.606.0424
> ja...@newmoyergeospatial.com
> 
>  
> 
> On Wed, Apr 5, 2017 at 5:40 PM, Aaron Braeckel <braec...@ucar.edu> wrote:
> Hello,
> 
> I am trying to determine if ImageMosaic can be used to gather and re-assemble 
> tiles into a virtual mosaic.  I am using ImageMosaic (as opposed to 
> ImagePyramid) since we need to aggregate our weather data across time and 
> elevation and other custom dimensions.  The files I am receiving have tile 
> indices indicating their physical location relative to one another, but I 
> have yet to find any ImageMosaic indexer option to aggregate them into a 
> geographic mosaic.
> 
> For example I have several files with information similar to the following, 
> where "T01" refers to the tile index from 1 to 4 (T01 is upper left, T02 is 
> upper right, etc.):
> 
> 20170331T1645Z_SITE_FIELD_T01.nc
> 
> 20170331T1645Z_SITE_FIELD_T02.nc
> 
> 20170331T1645Z_SITE_FIELD_T03.nc
> 
> 20170331T1645Z_SITE_FIELD_T04.nc
> 
> ...
> 
> 
> 
> In several areas of the GeoServer documentation it seems to be saying that 
> this can be done but I have not found any configuration mechanism to do so.  
> Is there any way to configure the indexer.xml file to reassemble these files 
> into a single, virtual dataset?  While I can re-assemble these tiles into the 
> mosaic myself and use those in GeoServer it is not the most desirable option 
> due to the data volumes.
> 
> Thanks!
> Aaron
> 
> 
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