Thank you for your 2 answers,
Yes, I thought it could be slow (“my” rasters may have from 1M up to 16M
pixels).
Nevertheless, I think that the ability of retrieving max/min/histogram values
of a band in a raster (GEOTiff/GRIB/etc.) store of GeoServer would be a great
help for SLD editors (or even more).
I wonder if such a feature could be implemented in order to get such an info
via WMS/WCS standard queries (GetCapabilities, DescribeCoverage, etc.).
I mean something like one can get from a raster band by using gdalinfo options
“-stats” (it returns MAX/MEAN/MIN/STDEV values) or “-hist” (it returns 256
buckets for the values).
Thanks,
Victor
From: [email protected] [mailto:[email protected]] On Behalf Of Andrea
Aime
Sent: Tuesday, February 28, 2017 9:15 AM
To: Bessette-Halsema, Dominique E <[email protected]>
Cc: Victor.Sinceac <[email protected]>;
[email protected]
Subject: Re: [Geoserver-users] GeoServer: how to get min/max values of a raster
band?
On Mon, Feb 27, 2017 at 5:59 PM, Bessette-Halsema, Dominique E
<[email protected]<mailto:[email protected]>> wrote:
You can Transform the geotiff to a FeatureCollection using
RasterAsPointCollectionProcess and then use the AggregateProcess
Yes, it would work, but would also be crazy slow on anything but small rasters.
Imho, better spend a few hours exposing the existing histogram machinery in
WPS. Just saying ;-)
Cheers
Andrea
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