No geoserver per se, but I would draw your attention to the edal-java system.
https://reading-escience-centre.gitbooks.io/edal-user-guide/content/exploring_datasets.html
The EDAL library provides the WMS service to the THREDDS 5+ netCDF servers with
extended capabilities. (ncWMS). It definitely requires CF-compliant netCDF
which I am not convinced your is, but it is more tolerant and manages things
like 5D netCDF which I need. As far as I can tell the geoserver plugin does not
use the EDAL libraries so it might be worth you having a look. It will NOT grid
to raster on the fly if that is what are trying to do.
I would have to say that your dataset does not like conventional netCDF target
– more a standard point+attributes like we would use for our fossil records.
What are you expecting to see on a visualized map?
From: Frederic Leclercq <frederic.lecle...@vliz.be>
Sent: Saturday, 16 July 2022 12:13 AM
To: 'GeoServer Users' <geoserver-users@lists.sourceforge.net>
Subject: [Geoserver-users] (large) NetCDF in Geoserver
Note: External sender:
Hi all,
I'm trying to serve a NetCDF file (CF-compliant), however the shape is not as I
would expect. Well - the rationale is that the dataset isn't a true gridded
dataset and to prevent multiple unused cells it uses 'points' as a dimension.
The shape looks like this:
dimensions:
points = 292332 ;
string45 = 45 ;
taxon = 10830 ;
variables:
int Date(points) ;
float lat(points) ;
float lon(points) ;
float crs ;
char AphiaID(taxon, string45) ;
char Taxon_Name(taxon, string45) ;
byte Pres_abs(taxon, points) ;
I can't import this in Geoserver:
"Caused by: java.lang.RuntimeException: java.lang.IllegalStateException: Unable
to create envelope for this dataset
at
org.geotools.imageio.netcdf.NetCDFImageReader.setInput(NetCDFImageReader.java:307)
at java.desktop/javax.imageio.ImageReader.setInput(ImageReader.java:380)
at
org.geotools.coverage.io.netcdf.NetCDFAccess.<init>(NetCDFAccess.java:119)
... 152 more"
Is it related to the taxon dimension which is basically non-numerical or should
points be reshaped in a time/lat/lon structure? (which will make this file very
very large, as the points have not that many lats/lons/dates in common)
On the other hand - points x taxon = 3165955560 values in the Pres_abs variable
- which is larger than 2^31-1 (and that is the maximum value for an array in a
java application) Before I dive into converting the points dimension to
lat/lon/time I would like to know if someone managed to serve a quite large
NetCDF into Geoserver.
Happy to read your ideas/help on this.
Thanks,
Fred.
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